News

Astronomy

To search for an advanced civilization, take a U-turn to star clusters

Globular star clusters might be safe, stable homes for long-lived advanced civilizations.

Genetics

The Iceman tells a new tale: Infection with ulcer-causing bacteria

Ötzi the Iceman was infected with a virulent strain of H. pylori. A new study is the first to piece together an ancient genome of these bacteria.

Oceans

Phytoplankton flunk photosynthesis efficiency test

Nutrient-poor ocean waters make phytoplankton photosynthesis inefficient

Paleontology

Saber-toothed salmon teeth more like tusks than fangs

Saber-toothed salmon teeth may not have been positioned like fangs at all.