Climate Change and Natural Variability

see Content: Article Manager, title CC&NV

April 22, 2020

Dr. Jay Lehr presents a refreshing look at the true controls of Climate Variability on the CFACT.org web site.  A very concise and interesting look: "

Climate science cannot attribute today's incredibly complex climate "100 percent" to CO2, methane, solar radiation, cloud formations, planetary oscillations, or other factors.  Claiming 100 percent influence is foolish.  The UN IPCC doesn't even try to go there. 






Updated 03 24 2020

Earthquake and Global Cooling Cycles, Whats Next to 2024


Adapt 2030:  Planets and Earthquakes
- Food shortages beginning in 2021... by David Dubyne


2016 Annual GWPF Lecture - Matt Ridley - Global Warming Versus Global Grand Solar Minimum


Honest science fair logic for climate change Sources...

Believing in Six Impossible Things Before Breakfast, and Climate Models

Canadian lecture at UK ROYAL ACADAMY GWPF


Climate Politics as Manichean Paranoia  - Roger Pielke Jr @ The GWPF (Global Warming Policy Foundation, UK):


A nice view of open debate on Global Warming. Need for folks talking to each other vs at them. Listening is important.

 Professor Ian Plimer book launch - Not For Greens

at the Institute of Public Affairs (IPA) - Australia



DR JENNIFER MAROHSEY at the I P A in Sydney talks about climate change and sea levels.


Climate Change: The Facts 2017 - Full event in Sydney




16,013 views  Aug 6, 2017




Updated 03 20 2020


An excellent honest scientific lecture that gives a UK perspective on climate change, concensus and both sides of the issue.  A Global Warming Policy Foundation lecture by Matt Ridley at the Royal Society.


See:  https://youtu.be/j5M1qtN62yk 


 Updated 03 06 2020


John Coleman's review of climate change and global warming sources - an


outstanding, simple explanation:




The Hartland Institute Climate Lecture by Lord Christopher Monckton - an excellent logical argument on climate sensitivities and feedback mechanisms:


Hartland Institute Climate isses:  https://www.heartland.org/Center-Climate-Environment/


Lord Monckton:  https://www.heartland.org/multimedia/videos/lord-christopher-monckton-iccc13-panel-5-advancing-from-theory-to-practice


Founder of the UK Hadley Center one of the world's best climate research centers.


Updated 02 27 2020  


Canada's Climate Discussion Nexus


by John Robinson


The 97% fabrication: The In-depth Story Behind a Climate Fraud


see:  https://youtu.be/ewJ6TI8ccAw 


Facts behind the original study by Naomi Oreskes in 2004: 928 sample size with 75% scientists saying that Global Warming (GW) was probably human caused by 2006 Al Gore warped this to say that 100% of scientists said GW was human caused.  Not True!!


Other studies by University of Illinois: 10,000 survey returned 3146 of which 90% said there was warming since the little Ice Age pre 1800s, and 82% said human activity was a significant contributing factor.  They did not mention a significant danger... Among meteorologists only 64% said yes - human activity was a significant factor.  The media looked at the 77 self proclaimed climate experts of which 75 said that human activity was a significant cause of GW: 75/77= 97% this is 2% of the survey respondents, thus the statement that 97% of the world's scientists is fake.


Australian Scienist John Cook studied 12,000 scientific papers: 97% said that greenhouse gases were at least partly responsible for GW.  But 2/3 of the papers examined expressed no view at all of the consensus.  Of the remaining papers 33 of 34% agreed with the consensus 33/34 = 97% again.  This survey did not ask if human effects on the climate were significant or dangerous, hence the result was somewhat nebulous and certainly not 100% consensus.  When checking the papers for the number that said humans contributed significant effects on GW only 64 of 12,000 papers agreeded: this is 0.53% of the sample.


The Nexus discussion goes on to a study of the world's scientific societies and academies concluding that the members were not surveyed, but the societies's climate activists wrote their statements saying 97% agreeded with significant GW anthropogenic causes. 


A survey bythe American Meteorological Society of its 7000 members had 1800 responses with 52% saying that warming has happened since the 1800s and 48% saying they believed it happened but was likely natural variability ... Have a look at the facts by Nexus.


Canada's Tim Ball's Lecture on Climte Variability - a classic comprehensive argument discussing Natural Climate Change from an interesting conservative Canadian Scientist


see:  https://youtu.be/M1VJtER2IUE 


Hide The Decline: A Climategate Backgrounder


A comprehensive analysis of temperture data: truth vs modified records for the IPCC's reports - political data vs real science??


Patrick Moore - The Power of Truth


THIS IS A POWERFUL LECTURE ON OUR PLANET'S SURVIVAL from Polar bears to coral reefs and plants to sea life by one of the founders of Greenpeace, who left it to follow the TRUTH.  Well worth listening to the full lecture - a Canadian's perspective




 Greenpeace Truth


Patrick Moore – The Sensible Environmentalist


Patric Moore + other scientists


Updated 01/03/2020


Global warming:  why you should not worry


Richard Lindzen’s refreshing ideas on reality of climate variability... 


Professor Happer discusses the physics of CO2 emissions and raditive processes - a bit technical:



Freeman Dyson Harrison Schmitt CO2 


Updated 12/31 2019


World In Midst of Carbon Drought (w/ Prof. William Happer, Princeton University...


A comprehensive look at CO2:  https://youtu.be/U-9UlF8hkhs 


Ancient History in Greenland Ice:  DRI, Oxford, ...


An Ice Core expert explains how his team makes ice cores and tracks ancient history back 3000 years...




Updated 21 Dec 2019


So far this year, 400 scientific papers debunk climate change alarm



400 Scientific Papers Published In 2017 Support A Skeptical Position On Climate Alarm


by Kenneth Richard, No Tricks Zone


During the first 10 months of 2017, 400 scientific papers have been published that cast doubt on the position that anthropogenic CO2 emissions function as the climate’s fundamental control knob…or that otherwise question the efficacy of climate models or the related “consensus” positions commonly endorsed by policymakers and mainstream media.


See:  https://wattsupwiththat.com/2017/10/25/so-far-this-year-400-scientific-papers-debunk-climate-change-alarm/ 


Updated 7 Nov 2019


NASA discusses Grand Solar Minimum and Maunder Minimum




Full article


Updated 24 October 2019


Talk to Rotary Clubs in Slovenia:


Global Climate Change: Media vs Physics




Dave Matthews, PhD


RC Summit County, Colorado


This email address is being protected from spambots. You need JavaScript enabled to view it.


Most of the world is concerned about climate change which appears to be leading to a much warmer climate with glaciers receding and sea level rising. Many extremes of temperatures, intense storms, and droughts have been observed and presented in the popular media.


The Media cites the UN’s IPCC reports that say the warming is human caused by CO2 emissions and the greenhouse effect on radiation balance.


This talk focuses on the physics of the atmosphere-sun system and uses expert lecturers from MIT, NCAR (US National Center for Atmospheric Research), and Nobel winner from the University of Stockholm. They present the scientific evidence that Global Climate Change is a natural phenomenon that has been occurring for millions of years. They present the physics of radiative transfer that is the basis of the greenhouse effect, analyze data used to show large temperature increases from 1980 to 2018, and look at the past 450,000 years of ice core data and the sun spot cycles that have created ice ages.


Dr. Fred Goldberg closes with a prediction for the future based on his expert analysis of the Arctic and the Grand Solar Minimum. It is not a warming scenario.


Links on YouTube


Radiative balance: MIT Professor Emeritus Richard Lindzen


A Classic Lecture on Climate Sensitivity by Atmospheric Scientist Professor Emeritus Richard Lindzen delivered in Europe in April, 2014. Prof Lindzen has been at the top of this field for decades, and was a lead author during the early years of the IPCC




            Stefan-Boltzmann radiative emittance law E=σ Τ4 σ=5.67 x10-8 W m-1-4


            Stefan calculated sun temp of 5430ºC in 1879 vs 5504ºC observed today


Data CO2 Scam: Senator Malcom Roberts Nov 2016


On 6 November 2016 Roberts delivered his response to the briefing, presenting a 42-page report titled "On Climate, CSIRO Lacks Empirical Proof", co-authored by Timothy Ball and Tony Heller.[28]Historic temperature data was altered:




A Funny Thing Happened on the Way to Global Warming


Steven F. Hayward, Pepperdine University at Hillsdale College


Climate Lecture:  •Nov 11, 2014


This lecture is part of Hillsdale College's 2014 CCA series.




97% of Scientists believe in Human caused global warming - actually 97% of 1/3= 32%


Physics Nobel Laureate; "Global Warming" is Pseudoscience
    Dr Fred Goldberg Squashes Climate Alarmism:  SWEDISH PERSPECTIVE


        Fake Man-Made Climate Change Alarmism has been gripping the planet, and followers of this insidious cult of CO2 have been frightening millions of people for decades. Now Dr Fred Goldman exposes the so-called "Science" of Dangerous Man-Made Climate Change for the complete nonsense that it is.




 Updated 4 Nov 2019


Does Greta Thunberg know about The Milankovitch Cycles and their effect on Climate Change?


Excellent analysis of Earth - Sun orbital characteristics and impacts


Jun 13, 2017








5.25K subscribers






A clear and graphical explanation of the complex orbital paths of the Earth relative to the Sun; How it varies over time and how it sets in place cycles of Climate Change.



Professor Ian Plimer book launch - Not For Greens

Jul 30, 2014
An interesting look at renewable energy and climate relationships from an Australian engineer and climate activist:
7.49K subscribers
The Institute of Public Affairs launch of Ian Plimer's new book from Connor Court Publishing, 'Not For Greens', in Melbourne on Tuesday 22 July 2014.


Updated 14 October 2019


Adapt 2030 shows extreme global weather causes this week.


North America sets records from Canada to Texas extreme cold and heavy early snowfall.  The Grand Solar Minimum has impacted our weather throughout 2019.  The Electrovers web site tracks the latest extreme weather events around the world. The map of today's record breaking cities is shown on this web page.  


The Danish Polar Portal provides much information on the Arctic regions with daily updates on the status of Greenland's snow and ice, the polar ice thickness, and many other scientific analyses of tremendous value to understanding climate variability. 


 New Zealand experiences Fourth Coldest September this Century


This appears related to the Grand Solar Minimum's reduced magnetosphere.  


New Zealand’s average temperature last month –for the country as a whole– was below the 1981-2010 September avg., Niwa has said in its Monthly Climate Summary.


An unusual warming of the atmosphere high above Antarctica –called a Sudden Stratospheric Warming event (SSW)– assisted in making last month the fourth coldest September in New Zealand this century.


There have only ever been two SSWs recorded in the Southern Hemisphere, previous to this years — one in September 2002 (major) and another in September 2010 (minor).


The 2002 SSW event resulted in New Zealand experiencing a significant cold outbreak in October while the 2010 event was associated with record rainfall during September.


Updated 23 Sept 2019


Scientists recognize that the sun is the primary source of energy in the Earth-atmosphere system.  Solar cycles have been tracked directly and indirectly over the past millena - thousands and hundreds of thousands of years as noted in many lectures linked on this web site.  Today, we are moving into a critical solar minimum with profound impacts on our society.  This Grand Solar Minimum (GSM) is not a human controlled phenomenon, rather an astronomical cycle.  The following GSM link provides updates to the world weather extremes caused by the GSM:


NASA Predicts 200 year Grand Solar Minimum coming soon


 Canadian meteorologist challenges human caused global warming ideas: https://youtu.be/ksMYjzWSlI4 


A Funny Thing Happened on the Way to Global Warming


A conservative energy expert's perspective: Professor Setven Hayward, CCA2 lecture in 2014:




 Human Caused global Warming:  The climate change hoax - Dr. Tim Ball, UK, Canada 2018






Updated 11 Sept 2019


Sea level is an interesting and complex variable that impacts millions of people around the world.  Dr Jennifer Marohasy discussed this at the Climate Change Concern Forum in Maroochydore, Australia.  She has been studying sea levels for over 30 years and has an interesting presentation that describes impacts on the Great Barrier Reef.  see:  https://youtu.be/dVlu-7_FxD8 You'll see there are many natural causes for sea level variations from lunar gravitational pull and 18-year orbital cycles to cyclones and extreme phase syncing of these phenomena that amplify tidal surges.




Updated:  28 June 2019


Our winter in Colorado was remarkably wet and cool with many strong Pacific storms dumping heavy wet snows.


We set many records in March and had over 1000 avalanches.  Snow continued into late June with some storms dumping 3-4 inches at our home, all of which quickly melted.  The Grand Solar Minimum led to a weakening of the sun's megnitosphere which permitted more cosmic rays to heat the stratosphere.  This warming caused several strong tropospheric polar vortices to form and maintain a deep polar flow into the Eastern US setting many new cold records from Minnesota to Florida.


The jet stream remained very strong through the winter with a blocking flow over western North America, Western Europe and a strong summer jet in the southern hemisphere with deep snows predicted in the Andes (1-4 meters).  The ECMWF model also predicted over 7 meters in parts of Alaska and British Columbia near Mount Logan in two 10-day forecasts.


Astronomers are warning about a little ice age coming within 10 years.  We'll be watching this carefully.




Princeton's William Happer rebuts myth of carbon pollution
World in Midst of Carbon Drought: William Happer , Princeton University
 Climate Change Narritive is driven by Agenda of Political Control, Myron Ebell: American Thought Leaders dialogue provides an interesting review of today's climate debate indicatig that human impacts are relatively mild.  Myron provides a very intersting discussion of issues, economics, and science.  see:


For a spectacular current view of our Earth from GOES Geosynchronous Satellites 16 and 17 you can see the latest images at:




 These satellites provide continuous coverage of storms and their tracks, snow and ice, hurricanes and droughts.


Yesterday, 8 October 2018, the IPCC provided an alarmist media proclamation that the world must act immediately to reduce CO2 emissions or we will have severe climatic consequences of warming and sea level rise.  The IPCC again quoted that 97% of scientists confirmed this human caused climate change, and nearly all scientific publications confirm this critical situation due to anthropogenic causes.  Unfortunately this is a biased one-sided unbalanced perspective of True science.  In the links below I will provide a more rational, physically honest set of view points that the climate alarmists proclaim are heretics, untrue, unpublished works.


Updated:  7 Januarary 2019


The Solar Cycle has been studied for centuries and the following link provides a succinct summary of this critical source of,  or lack of energy.  The Sun is going to sleep -  last Grand Solar Minimum 400 years ago according to astrophysicist Peter Temple:


See:  https://www.youtube.com/watch?v=phaBUQ3NU1w 


Ice Age comming?  Glacialogists show, in a PBS program, some fascinating new evidence from ice core studies regarding a "cold climate in the very near future".  Deep ocean evidence also shows that we are heading for another ice age according to Lamont Observatory's vast number of sea bottom cores.   John Casey clarifies the current dogma of global warming vs climate change warming over the past 200 years.  Now scientists are finding significant stable temperatures that are transitioning to cooling and glacier expansions.  I watch the ECMWF global forecasts every day looking at 10-day snow forecasts, temperatures, and sea surface waves that mark the extent of polar ice.  This past 2018 Antarctic winter had record breaking cold temperatures down to -98ºC shattering the previous Vostok -89º world record.  NASA observed the -98º, I saw half a dozen reports below -92 to -97ºC.  Is this an indicator of the new solar minimum's approach? 


Real-time Polar weather sources of information:


Meteo France Arctic




Meteo France Antarctique:




Space Science and Engineering Center, U Wisconsin, Madison




Have a look at this comprehensive current solar analysis below:




 NASA  Solar Cycle:  https://spaceplace.nasa.gov/solar-cycles/en/ 


NOAA-USAF Space Weather Center:




for the latest daily solar information:




General Sunspot cycle information:




 Adapt 2030 Interesting current information and adaptation preparedness:




Note:  I have been watching heavy snows in the Middle East across Turkey and down to Lebanon and in the Hindu Kush in the ECMWF model runs this winter.


 These ADAPT 2030 folks have an interesting discussion on how our planet is moving toward the Grand Solar Minimum with evidence from historic climate analyses, history of civilization and agriculture, and current observations of Arctic ice and Greenland ice mass increasing ... from 2017 to 2018... They have some critical crop forecasts based on astrophysics solar impacts on the Earth.


 see:  https://www.youtube.com/watch?v=J2z5DVBqCYs 


Paleo Climate review of ice age potential from glacier experts 100,000 yr ice cores from Baffin Island...Lamont Observatory: Sea Sediments 1-Million year records were related to Earth's Orbital Mechanics, quite interesting: 






12 JANUARY 2019


Dr Arlin Super, world renound cloud physics expert, professor, and retired science program manager for US Bureau of Reclamation projects recommended the following web sites as scientifically based unbiased sources of reliable information.  I have known and respected Arlin for over 50 years:


 World's most looked at site on climate and global warming issues:




Judith Curry, Climate expert and professor, whose testimonies at Congressional Hearings on climate change provide insights regarding the physical controls of climate and weather:






Roy Spencer, PhD : Climatologist, author, former NASA scientist:






Anastasios Tsonis is emeritus distinguished professor at the University of Wisconsin-Milwaukee:






Not a lot of People know that:






Word Press: DW News world-wide:






No Tricks Zone:




"Not here to worship what is known, but to question it" - Jacob Bronowski. Climate and energy news from Germany in English - by Pierre L. Gosselin:












8 October 2018


Climate change facts from the experts:
Professor Emeritus Richard Lindzen (MIT):


QUITE thorough analysis of radiative balance technical, classic lecture at PH D level but yet understandable. Professor Lindzen privides a clear review of the fundamental physical laws that debunk activist theories of human induced global warming:



Global Warming, Lysenkoism & Eugenics - Prof Richard Lindzen

Good intellectual discussion of science evolution and bias w/r climate science globally

These lectures will challenge your intellectual perspective on human impacts on climate variability. They confirm what I have said over the past 20 years. Please take some time to listen to these scientists. It will take time, and you can play the lectures when you want to get a new perspective.
Posted 10-5-2018 Dave


More realistic lectures on Climate Change from Europe:
Global Warming Policy Foundation: Panel of Experts Nigel Wilson
Professor Matt Ridley explains some basics about just why we should not be in fear of "man-made" climate change. Speech was at the Royal Society, UK on the 17th October, 2016. "Skeptics are winning the argument"




Australian perspective:
The CO2 Scam - Australian Senator Malcolm Roberts Nov 8th 2016: "destroyed from within by activists"

NASA Scientist and Canadian Scientists present interesting analyses. NASA scientist shows altered data sets of surface temperature and sea level… Canadian scientist reviews the politics of government science and IPCC…


1000frolly 2 years ago
WELL DONE Ted Cruz for exposing this absolute scam of invented Global Warming. Thumbs DOWN to Obama and his crony's for their vile attacks on real scientists 2:11:00

Dr Fred Goldberg Squashes Climate Alarmism
Published on Mar 17, 2016

Fake Man-Made Climate Change Alarmism has been gripping the planet, and followers of this insidious cult of CO2 have been frightening millions of people for decades. Now Dr Fred Goldman exposes the so-called "Science" of Dangerous Man-Made Climate Change for the complete nonsense that it is:


Curry Christy Mann & Pielke go at it
Published on Mar 30, 2017


Date: Wednesday, March 29, 2017 - 10:00am Climate Science: Assumptions, Policy Implications, and the Scientific Method.
Protaganists; Dr. Judith Curry President, Climate Forecast Applications Network; Professor Emeritus, Georgia Institute of Technology
Dr. John Christy Professor and Director, Earth System Science Center, NSSTC, University of Alabama at Huntsville;

State Climatologist, Alabama Michael Mann Self-appointed leader of the CO2-drives-the-climate group-think cabal, subject of the Wegman report into the Hockey Stick fake science, Climate-gate email scandal proponent, expert in pseudo-science, litigious fanatic who loses court cases one after another, thin-skinned verbiage abuse expert, hide-the-decline instigator, Geologist who continuously claims to be a 'climate scientist' when he has no such qualification, Ad-Hominem practitioner, untrustworthy man with VERY small hands; Trofim Lysenko reborn.

Dr. Roger Pielke Jr. Professor, Environmental Studies Department, University of Colorado

10 09 2018
Burt Rutan; the Real Climate Change Data
THIS IS  A VERY NICE VIEW of CO2 and climate change.  An honest engineer’s perspective of the fundamentals and clarification of the “alarmist” charts, data and rhetoric for scare tactics that the media has pushed.

Published on Jul 12, 2015

Aviation pioneer Burt Rutan presents the real data on climate change and global warming. The effects of our CO2 on the planet are also investigated.

Climate Scientist Murry Salby Returns! - Presents NEW SCIENCE
Published on Jun 24, 2015


Author of the seminal book on climate; "Physics of the Atmosphere & Climate" Professor Murry Salby is without doubt one of the best Climate Scientists on the planet. In a lecture in London on the 17th March, 2015, he reveals new work which shows that; 1) The climate sensitivity is below 0.2c - confirmed by 3 independent methods. 2) Most of the observed increase in atmospheric CO2 is not anthropogenic. 3) CO2 movements and concentrations are largely determined by nature, not man; consequently, any cuts we make to our CO2 emissions will not have the desired effect, and are a costly waste of time. 4) CO2, whether man-made or not, does not 'drive' the climate system. Professor Murry Salby has been vilified by enviro-alarmists and the left for his scientific results. Salby was disenfranchised and exiled from academia in Australia for daring to speak such “sacrilege.” In a case similar to many others we have seen in Australia, and across the west, he was the subject of University hate and was finally sacked while he was on a lecture tour in Europe; his employer, Macquarie University of NSW, sacking him from his position as Professor of Climate Science. The University board cancelled his return ticket home, stranding him in Paris. All Salby's work was confiscated and has still not been returned to him. The pursuit of genuine Science in the field of climate - and free speech are Dead in most Western Universities: Other cases where top scientists were vilified and sacked or demoted by a University for the results of their science or for their views on the climate include; Bob Carter, Murry Salby Lennart Bengtsson, David Legates, George Taylor, Caleb Rossiter, Bjorn Lomborg, Henk Tennekes, Askel Winn-Nielsen, Alfonso Sutera, Anonio Speranza and scores of others.

Science & Technology

Germany's Renewable's Disaster - Prof Fritz Vahrenholt
The Global Warming Policy Foundation: Restoring balance and trust to the climate debate


Published on Jan 27, 2018

Professor Fritz Vahrenholt of Hamburg University speaks about the 'clean' energy revolution going on in Germany. The average German family is paying US$400 per year more for their energy, and the cost of the move to 50% wind and solar power has cost the country over US$30 billion. Meanwhile, Germany's emissions are going up, and have been for several years, while the USA's emissions continue to fall. If the contained emissions in the wind farms and solar panels are included, no savings in CO2 emissions are made. The main effect of the move to renewable energy, appears to have been a large transfer of wealth from the poor to the rich in Germany.

Prof Vahrenholt wrote the excellent book "The Neglected Sun" along with co-author Prof Luning. Highly recommended read!


Physics Nobel Laureate; "Global Warming" is Pseudoscience


Published on Jan 21, 2018

Professor Ivar Giaever, Nobel Laureate in Physics destroys the pseudoscience of 'man-made global warming' through CO2. 1000Frolly channel relies on your generosity and support to keep up the fight against the forces of pseudo-science.  Professor Ivar Giaever, the 1973 Nobel Prizewinner for Physics trashes the global warming/climate change/extreme weather pseudoscientific clap-trap and tells Obama he is "Dead Wrong". This was the 2012 meeting of Nobel Laureates. The 2015 speech by Prof Giaever is here; https://www.youtube.com/watch?v=TCy_U...


Climate Debate - Mann vs Curry & Moore June 2018


A balanced debate on climate change….
Published on Jul 22, 2018

Charleston, West Virginia, June 12, 2018. Dr. Michael Mann, Dr. David Titley, Dr. Patrick Moore and Dr. Judith Curry met in to discuss climate change.

They were asked two questions: -

 To what extent is the use of fossil fuels affecting climate change? -

What can and should be done to offset those effects?
 This video is the copyright of ©️2018 Spilman Thomas & Battle, PLLC. No infringement of copyright is intended. Video is presented here in its entirety without comment or advertisements, and is shown purely for educational purposes. Category; Education

Michael Mann’s Activist perspective of IPCC support, we must double the rate of sea level rise by 2x…  letter to the editor of Wall St Journal denial of “most basic facts”… unprecedented droughts lead to national security problems, wild fires…. perpetual fires… coastal damage inflicted by climate change, adapt?  No further fossil fuel use…

Dr. Judith Curry substantial disagreement, no unified theory fo climate predictability… must look at the whole elephant, not just the tusk.  IPCC consensus no longer supported due to manufactured political concensus.  

Dr. Moore, IPCC does not say that hurricanes and tornadoes are increasing in Climate change, but the media does.."This has become some kind of religion, even the Pope is into it."

Admiral Titley believes national security is at risk for many factors from sea level rise to 500 million displaced people.

SEE: 1000Frolly for more youtube lectures and articles on climate change