News
- Anthropology
Mexican find reveals ancient dental work
A 4,500-year-old human skeleton found in Mexico represents the earliest instance in the Americas of intentionally modified teeth, apparently to create space for a ceremonial mouthpiece.
- Paleontology
Sticky Subjects: Insights into ancient spider diet, kinship
Remnants of a spider web embedded in ancient amber suggest that some spiders' diets haven't changed much in millions of years.
- Earth
Toxic Leftovers: Microbes convert flame retardant
Bacteria can break down a common flame retardant into more-toxic forms.
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Older but Mellower: Aging brain shifts gears to emotional advantage
The aging brain reorganizes in ways that foster emotional stability and a tendency to favor positive emotions over negative ones.
