News
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GeneticsAfrica’s oldest human DNA helps unveil an ancient population shift
Long-distance mate seekers started staying closer to home about 20,000 years ago.
By Bruce Bower -
Planetary ScienceAn ancient impact on Earth led to a cascade of cratering
For the first time, scientists have discovered clusters of craters on Earth that were formed by the impacts of material thrown out of a larger crater.
By Sid Perkins -
AstronomyA rare collision of dead stars can bring a new one to life
These carbon- and oxygen-covered stars may have formed from an unusual merging of two white dwarfs.
By Nikk Ogasa -
PaleontologyFossils show a crocodile ancestor dined on a young dinosaur
The 100-million-year-old fossil of a crocodile ancestor contains the first indisputable evidence that dinosaurs were on the menu.