An ancient DNA analysis of a 5,500-year-old human skeleton reveals that an ancestor of the bacterium that causes syphilis was ...

Inserting, removing or swapping individual atoms from the core of a molecule is a long-standing challenge in chemistry. This ...

Prehistoric giant kangaroos could hop after all, challenging long-held beliefs about their movement.

A previously unknown strain of syphilis bacteria has been discovered in human remains in Colombia, dating back 5,500 years.

Scientists have recovered a genome of Treponema pallidum—the bacterium whose subspecies today are responsible for four ...

Ducks evolved reverse spirals and sperm storage that give females surprising control, challenging long-held assumptions about ...

In a new pilot feasibility study, researchers from Mayo Clinic, the University of Washington School of Medicine, the ...

An international research team reports an unusually well-preserved Homo habilis skeleton that dates to just over 2 million ...

Sensitive hearing may have evolved in mammal ancestors far earlier than scientists once believed. By modeling how sound moved ...

Pioneering techniques used in this research may soon be applied to other dinosaur fossils and alter the course of ...

A partial skeleton weighing just 70 pounds is bridging a critical gap in the fossil record and redefining the timeline of ...

Long before big cats, terror birds reigned as apex predators. Here’s how these flightless birds hunted, and why they went ...