Isotopic Bomb Traces Are a Boon to Biological Dating
Isotopic Bomb Traces Are a Boon to Biological Dating
The decades-old signature of nuclear testing can reveal the ages of organisms, or even individual cells.
Isotopic Bomb Traces Are a Boon to Biological Dating
Isotopic Bomb Traces Are a Boon to Biological Dating

The decades-old signature of nuclear testing can reveal the ages of organisms, or even individual cells.

The decades-old signature of nuclear testing can reveal the ages of organisms, or even individual cells.

carbon dating
Artifacts Found in North America Suggest Humans Came By Sea
Artifacts Found in North America Suggest Humans Came By Sea
Chia-Yi Hou | Aug 29, 2019
Dating back to 16,000 years, items from a dig site in Idaho point to the first settlers arriving by a Pacific coastal route rather than by an ice-free land bridge from Siberia.
Image of the Day: Skeleton Lake
Image of the Day: Skeleton Lake
Nicoletta Lanese | Aug 23, 2019
Human remains around Roopkund Lake in India bear South Asian, East Asian, and Mediterranean ancestry.
In Canada, Signs of Life Nearly 4 Billion Years Old
In Canada, Signs of Life Nearly 4 Billion Years Old
Ashley P. Taylor | Sep 28, 2017
Embedded within 3.95-billion-year-old rock, scientists have found graphite with a carbon signature that indicates biological activity.
Study: Last Woolly Mammoths Died of Thirst
Study: Last Woolly Mammoths Died of Thirst
Alison F. Takemura | Aug 3, 2016
On remote island near Alaska, salt water intrusion and a warming climate killed off the last remaining survivors of the species.
Capsule Reviews: Summer Fiction
Capsule Reviews: Summer Fiction
Bob Grant | Jul 31, 2013
Crescent, An Empty Land of Plenty, Prophet of Bones, and Equilateral
Coral Clocks
Coral Clocks
Kerry Grens | Feb 28, 2013
Uranium dating of coral tools used by the earliest settlers of the South Pacific island kingdom of Tonga offers unprecedented precision in reconstructing their history.