Evolution

Bajadasaurus had a neck covered in long spikes. The question is "Why?"

As anthropologists debate how best to protect uncontacted tribes, indigenous groups in Colombia are working to shield their isolated neighbors from the march of modernity

Javelin throwers chucking replicas of Neandertal spears were able to hit targets farther away, and with greater force than previously thought to be possible. Christopher Intagliata reports.

A partial skeleton significantly updates the history of a major, extinct bird family

Researchers have deduced which early human species occupied Denisova Cave and when, drawing surprising conclusions about who made the sophisticated artifacts found there

Small eyes and decorative plates make this Triassic creature stand out

A beautiful skull of Prestosuchus updates what paleontologists thought they knew about this Triassic reptile

A species of hermit crab appears to have evolved a large penis to enable intercourse without leaving, and thus possibly losing, its adopted shell.

Gut contents reveal what the early whale Basilosaurus ate.

Modeling shows the 290-million-year-old Orobates had an advanced way of walking—revising an enduring view of how tetrapods colonized dry land

Ants infected with fungal pathogens steer clear of other cliques within the colony—avoiding wider infection, and allowing for a sort of immunity. Lucy Huang reports. 

Climate change is shifting population numbers and nest building by resident and migratory birds in Europe—sometimes leading to deadly conflict. Christopher Intagliata reports.