Biology

New trove of fossils reveals that ancestral animals likely emerged in the deep sea

Genetic analysis suggests interbreeding between two groups of human relatives

A newfound nocturnal navigation system challenges what entomologists thought they knew about how ants find their way

Some of Earth’s tiniest life-forms inhabit slowly sinking particles of fish poop and debris, playing a crucial role in ocean carbon storage

Archaeologists analyzed a Neanderthal molar that seems like it was intentionally drilled, but some experts are skeptical

Sled dogs have worked alongside humans for thousands of years. In the harsh Alaskan winter they remain the best option for traversing the snowy landscape

In an open letter, thousands of researchers criticized the White House’s firing of the National Science Foundation’s board as “an alarming attack” on U.S. science

David Attenborough once directed programming at the BBC and has hosted numerous award-winning nature documentaries, but he’s always stayed down-to-earth, colleagues say

Earth’s ancient climate is written in... ostrich eggshells and stomach oil?

An almost unkillable fungal strain isolated from NASA’s ultrasterile clean rooms hints at “critical gaps” in interplanetary quarantine

A look at what makes scorpions so deadly, why there’s hope for preeclampsia and how President Trump is gutting wind energy

Just like vertebrates, cephalopods—such as octopuses and squid—have elaborate brains. Neuroscientists are flocking to them for insights into how intelligence evolved.