News
- 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.
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- Paleontology
Oxygen blew up ancient amoebas
Single-celled creatures' size spiked as oxygen levels rose.
- Health & Medicine
A mind for optimism
When predicting the risk of unfortunate events, people heed positive news better than ill tidings.
