It's the dawn of the living dead for some ancient bacteria frozen in Antarctic glaciers: The microbes were recently brought back to life by scientists.
Fossils of tiny fish that lived 420 million years ago have given scientists the earliest insight yet into how vertebrates developed tooth-bearing jawbones.
The packet of genetic code that increases the odds of being a southpaw is also linked to certain mental illnesses such as schizophrenia, a new study says.
Sorry, horror movie fans. There is no longer enough oxygen in the air to support the bird- and person-size insects that roamed Earth 300 million years ago.
Seeding plankton blooms to suck up the greenhouse gas CO2 could grow profits for a U.S. firm—but several scientists and regulators are unsure about the ecological consequences.