News
- Paleontology
Family Meal: Cannibal dinosaur known by its bones
Analyses of the gnaw marks on bones of Majungatholus atopus, a carnivorous dinosaur from Madagascar, indicate that the creatures routinely fed on members of their own species.
- Paleontology
Fossils of early salamanders found
A recent discovery of fossilized salamanders pushes back a milestone in amphibian evolution by more than 100 million years.
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Sperm show age
The quality of a man's sperm declines as he gets older.
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Sleep debt exacts deceptive cost
Moderate but sustained sleep deficits undermine alertness and other mental faculties to a potentially dangerous extent, although people who experience this level of sleep loss usually don't feel particularly drowsy.
