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
Chia-Yi Hou | Aug 29, 2019 | 2 min read
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
Nicoletta Lanese | Aug 23, 2019 | 1 min read
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
Ashley P. Taylor | Sep 28, 2017 | 2 min read
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
Alison F. Takemura | Aug 3, 2016 | 2 min read
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
Bob Grant | Aug 1, 2013 | 4 min read
Crescent, An Empty Land of Plenty, Prophet of Bones, and Equilateral
Coral Clocks
Kerry Grens | Mar 1, 2013 | 4 min read
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.