How warming affects Arctic sea ice, polar bears

As world leaders meet to try to ramp up efforts to curb climate change, the specter of polar bears looms over them.

What is a tsunami and what causes them?

All coastlines around the world are vulnerable to tsunamis, so it's important to know your community's hazard and evacuation plans in case they're needed.

Historical tsunamis that have struck around the world

Tsunamis have devastated countries around the world, costing countless lives and leaving behind millions of dollars in damage.

Waste in Sri Lanka landfill killing elephants, conservationists warn

Around 20 elephants have died over the last eight years after consuming plastic trash in the dump in Pallakkadu village in Ampara district.

Christmas tree pickup, recycling tips for after the holidays

The National Christmas Tree Association is offering tips on how to get rid of your real Christmas tree without burning it or throwing it in the trash.

France will require new car ads to promote walking, cycling

In 2022, new car ads in France will encourage greener alternatives like walking or cycling, while several fruits and vegetables will no longer be sold in plastic.

Drought-stricken Las Vegas may ban grass yards for new homes

Grassy yards would be banned at all new housing and commercial developments in the Las Vegas metro area as officials try to expand water use limitations and the region prepares for a hotter and drier future.

Biden raises standards on vehicle mileage to fight climate change

In a major step to fight climate change, the Biden administration is raising vehicle mileage standards to significantly reduce emissions of planet-warming greenhouse gases.

States sign agreement to reduce use of Colorado River water

Negotiators for California, Arizona and Nevada signed an agreement Wednesday to voluntarily reduce their use of Colorado River water by 500,000 acre-feet in 2022 and 2023 to help stave off another round of mandatory cutbacks.

Siberia set arctic heat record in 2020, UN weather agency affirms

Average temperatures were up to 10 degrees Celsius more than usual in Arctic Siberia. It played a key role in forest fires, loss of sea ice and global temperature rises that made 2020 one of the three hottest years on record.

Biden administration unveils plan for electric vehicle charging station network

The Biden administration has released a federal strategy to build 500,000 charging stations for electric vehicles across the country and ultimately transform the U.S. auto industry.

Will new bacon law begin? California grocers seek delay

Put simply, the law requires that breeding pigs, egg-laying chickens and veal calves be given enough space to stand and turn around. For pigs, that means they no longer can be kept in narrow “gestation crates” and must have 24 square feet of usable space. Hog farmers argue the changes would be too expensive.

Green Monday will have holiday shoppers racing against shipping deadlines

Holiday shopping on Green Monday this year may not guarantee your gift still comes on time, given widespread supply chain issues and the fact that some shipping deadlines have already passed.

Was Kentucky, Tennessee tornado outbreak related to climate change?

Dozens were killed when tornadoes ripped through at least five states late Friday, including a candle factory in Kentucky and an Amazon warehouse in Illinois. Did climate change play a role in this catastrophic weather event?

California's Lost Coast redwoods could be saved from logging

Save the Redwoods League in San Francisco agreed to purchase the historic DeVilbiss Ranch timberlands for $37 million if it can raise the money by Dec 31.