News

Life

Take my enemy, please

The risky business of relocating endangered species might have better outcomes if conservationists shift solitary animals along with their usual territorial rivals.

Life

Study maps disease-linked gene variants

New evidence suggests that disease-associated genetic variants are mostly involved in regulating genes.

Humans

Plague bug not so fierce after all

DNA analysis shows bacterium was fairly ordinary but thrived in pestilent conditions of medieval Europe.

Life

Doubled gene means extra smarts

Change during human evolution could have led to bigger brains.

Paleontology

Oxygen blew up ancient amoebas

Single-celled creatures' size spiked as oxygen levels rose.