For many, an ideal forest is one that looks the same as it did before European colonizers arrived. 

The planet was different 700 million years ago. In the Cryogenian period, Earth featured a single supercontinent known as Rodinia, complex organisms had yet to explode on to the scene, and the globe was an ice-covered snowball.

If you had to guess which part of the world has the highest levels of atmospheric mercury pollution, you probably wouldn’t pick a patch of pristine Amazonian rainforest. Yet, that’s exactly where they are.

When rain falls, it picks up pollution from streets, farms and other manmade features as it winds toward the ocean.

Scientists repeatedly check the weather forecasts as they prepare aircraft for flight and perform last-minute checks on science instruments.

Three months after the most destructive fire in California’s history, while the residents of Paradise were sifting through the rubble of their houses, moving out of shelters and into less temporary but not permanent housing, considering the future of their home—while they were still grieving the 86 people killed—Catrin Edgeley took her notebook and recorder to the destroyed town.

Being common is rather unusual. It’s far more common for a species to be rare, spending its existence in small densities throughout its range.

As world leaders gathered in the United Kingdom this fall to address the climate crisis, a team of researchers at the University of Delaware prepared to produce the next generation of sustainably minded engineers.

Engineers at the University of Illinois Chicago have built a cost-effective artificial leaf that can capture carbon dioxide at rates 100 times better than current systems. 

Clouds in the southern hemisphere reflect more sunlight than those in the northern hemisphere.