People walk along the Lake Michigan during a Polar Vortex

Global Warming Can Lead To Extreme Cold, Too

Some atmospheric scientists believe changes in climate may weaken the jet stream, which makes it easy for cold air to drift over North America.

  Climate Change

10:19A man walks on ice near Lake Michigan
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'The Why' On The Polar Vortex

2:32A thermometer in Chicago in January 2019
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Cold And Heat: Which Is More Dangerous, And Why?

1:07Crowds on a beach
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2018 Was Earth's Fourth-Hottest Year On Record

2:03Wind turbines
Argonne National Laboratory

Renewable Energy Is Making More And More Sense

Pacific Ocean
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2018 Ocean Temperatures Were The Hottest On Record

4:30The Alliance: Sustainability for the 21st Century. Sponsored by Green Umbrella

The Alliance: Sustainability for the 21st Century

1:40President Jair Bolsonaro is recognized as commander-in-chief of Brazil's Armed Forces during his inauguration
Getty Images / Bruna Prado / Stringer

Brazil's New Forest Policies Could Cause Worldwide CO2 Impacts

1:09Sea water floods a church in Bulacan, Philippines
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Countries Agree On New Climate Rules, But They May Not Be Enough

1:14Floodwater after Hurricane Florence in South Carolina
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The Slow, Careful Rise Of Climate Change Attribution

1:02Coal plant
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EPA Plans To Roll Back Coal Plant Emissions Policy

1:40Steam and exhaust rise from a coking plant in Germany
Getty Images / Lukas Schulze

Who Should Pay To Fix The Climate: Developed or Developing Nations?

1:15View of Beijing, China
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Developed Countries Will Likely See Uptick In Carbon Emissions In 2018

2:14A protester in Paris
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Paris Protests Preview The Challenging Transition To A Green Economy

0:48Sir David Attenborough
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David Attenborough Speaks Out On Climate Change At UN Conference

Shell gas station sign
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Shell Plans To Link Executives' Pay To Hitting Emissions Targets

0:38Power plant cooling towers
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The European Union Wants To Go 'Climate Neutral' By 2050

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Brazil Takes Back Offer To Host 2019 UN Climate Talks

0:58Buildings shrouded in smog
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Global Greenhouse Gas Emissions Reached Record High In 2017

1:11A factory in China
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UN Climate Change Report Cites Concerns Over Illegal CFC Manufacturing

0:57An unauthorized factory in China.
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UN Report Warns Greenhouse Gases Hit Record Levels

1:26The Wilmington ARCO refinery is seen before dawn in Los Angeles, California.
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Government Report Says Climate Change Will Devastate The US

0:45Dairy cow
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Another Report Says Eating Meat Is Bad For The Environment

0:46Air quality in London
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London's Air Quality Improved, But The Lung Health Of Children Did Not

0:56People at the ocean
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Scientists Miscalculated In Report Claiming Oceans Absorbed More Heat

1:19Emission from a smoke stack.
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G20 Nations Are Still Far From Reaching Paris Climate Goals

1:28Sky over Los Angeles
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UN-Backed Report Says Ozone Layer Is Healing

1:03Tire in a dried up reservoir
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Supreme Court Won't Block Young Americans' Climate Change Lawsuit

1:05Greenhouse gas emissions
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Washington Will Vote On An Initiative To Fight Carbon Pollution

1:36Hurricane Willa in the Pacific Ocean on Oct. 22
National Oceanic and Atmospheric Administration

Why Are So Many Hurricanes Getting So Strong, So Quickly?

1:01Emissions stacks at a coal-fired power plant
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UN-Backed Fund Approves $1B For Climate Action In Developing Countries