This activity explores the concepts and research presented in the short film Out of the Ashes: Dawn of the Age of Mammals, which explores how life on Earth recovered after a major asteroid impact.

If you're interested in modifying our activities for your Multilingual Learners, this article by Rhode Island educator Diana Siliezar-Shields discusses how she scaffolds our resources about metabolic regulation with her students.  

This interactive module introduces the anatomy of the immune system and walks through the timeline of a typical immune response. 

Male songbirds usually learn their tunes from adult mentors. But when aspiring crooners lack proper role models, they hit all the wrong notes — and have less success attracting mates.

Scientists have discovered the ultimate case of regeneration: Some decapitated sea slugs can regrow hearts and whole new bodies.

Floods in northern India were set off by a break on a Himalayan glacier upstream. Here’s a look at how glaciers and glacial lakes form and why they may sometimes break.

We broke phosphorus. And the cost of breaking the phosphorus cycle is not just looming scarcity, but also rampant pollution.

In this Jan. 13, 2021, file photo a wind turbine is silhouetted against the rising sun Wednesday, Jan. 13, 2021, near Spearville, Kan.

Some beetles roll the flesh of dead animals into a ball and cover it in goop — all to feed their future offspring. Now scientists think that goo might do more than just slow decay. It also appears to hide the scent of the decomposing bounty and boosts another odor that repels competitors.

America’s rivers are changing color — and people are behind many of the shifts, a new study said.

The COVID-19 pandemic has helped revive the autopsy.

For the first time, scientists have shown that hummingbirds can sing and hear in pitches beyond the known range of other birds, according to research published Friday in the journal Science Advances.