Canada’s oil-rich province of Alberta to vote on separating from country

A vote will be held this fall on whether Alberta should stay in Canada or take legal steps under the Constitution to hold a binding referendum on leaving.

How the Chattahoochee River is faring days after fish kill

Days after a massive fish kill in the Chattahoochee River, the riverkeeper says oxygen levels in the water are recovering, but it is too early to know exactly what remediation will look like.

Whale at center of rescue effort controversy found dead off Denmark coast

The humpback whale that rescuers tried to save two weeks ago after it became stranded in the Baltic Sea was found dead off a Danish island, authorities confirmed over the weekend.

Offspring of Pablo Escobar's 'cocaine hippos' slated to die may get second chance in India

The Colombian government previously approved a plan that would allow the culling of approximately half of the estimated 170 hippopotami roaming freely through the South American nation.

Map: The fastest-warming US states revealed

A new analysis reveals just how much the U.S. has warmed since the first Earth Day, showing dramatic temperature increases across every state and nearly every major city.

Green Mountain State tops Hawaii, California for greenest state - See how your state ranks

Green is right there in the name, even if the meaning is different. Vermont, a state whose name is a blending of the French words for the color green and mountain, claimed the top spot in a recent analysis of the greenest states in terms of eco-friendliness.

Boundary Waters mining bill approved by Senate after Sen. Smith protest

After Senator Tina Smith staged a protest Wednesday night to block a vote on a bill that would allow mining in the Boundary Waters, the U.S. Senate is now scheduled to vote on that bill Thursday morning.

Hippos connected to Pablo Escobar face culling in Colombia

Dozens of hippos who descended from the ones brought to Colombia by onetime drug kingpin Pablo Escobar will be killed as the South American nation looks to control its population.

IUCN Red List: Emperor penguins and Antarctic fur seals added to endangered list

One of the Antarctic’s most well-known and beloved animals is at the brink of extinction, and environmentalists are calling it a "stark warning" of the threat of climate change.

EPA chief tells climate skeptics to celebrate rule repeal as March heat breaks records

The Environmental Protection Agency’s top official told a crowd of climate science skeptics that they should celebrate the repeal of the 2009 finding that underpinned the agency’s attempts to combat climate change ever since. His comments came the same day a separate federal agency reported record-shattering warmth and precipitation numbers. 

Snowy owl, hammerhead sharks among 40 species gaining CMS protections

Cheetahs, snowy owls and hammerhead sharks are among the dozens of animal species on the cusp of extinction that will receive greater conservation protections. 

2025 saw record levels of solar, wind power in US: Here's where

Solar and wind power just hit record highs in the U.S. with explosive growth and plunging costs. Here’s which states are leading.

Metro Atlanta therapist turns plastic lids into student art

Metro Atlanta therapist Heather Elson and local students are turning thousands of plastic bottle caps into art for an Earth Day exhibit.

Spiders the size of a human hand are spreading throughout the US

The frightening, brightly-colored large spiders are back, and experts say they are spreading rapidly across the U.S.