asteroid
Life Reemerged Just Years After Dinosaur-Killing Asteroid Impact
Life Reemerged Just Years After Dinosaur-Killing Asteroid Impact
Ashley Yeager | May 30, 2018
Nutrient-rich water helped marine organisms reinhabit Chicxulub crater relatively quickly after the mass-extinction event.
Present-Day Arboreal Birds Have Ground-Dwelling Past
Present-Day Arboreal Birds Have Ground-Dwelling Past
Sukanya Charuchandra | May 24, 2018
A mass extinction event from an asteroid hitting Earth wiped out forests and, concurrently, tree-dwelling birds.  
Study: Dino Populations Were Waning Before Wipeout
Study: Dino Populations Were Waning Before Wipeout
Bob Grant | Apr 19, 2016
The massive rock that smashed into Earth 66 million years ago killed off many dinosaur species, but the animals were in steady decline for millennia before the cataclysm, researchers report.
Meteorite hints at life’s origins
Tia Ghose | Jun 9, 2011
As debate continues to swirl around arsenic-loving bacteria, a space rock yields new astrobiological clues.