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To better study the UFO phenomenon, science needs more eyes on the skies.
2:24
Evolution seems to favor these numbers.
2:32
What causes flames to start spinning?
1:34
As the Camp Fire scorches a community in California, residents leave by car and on foot.
1:01
Scientists have several theories for how Earth's Moon formed.
4:35
Researchers hope to observe lunar material ejected from an impact.
2:18
Hint: Carbon in the ocean is different than carbon on land.
0:38
To milk a horse, one must trick a mother horse—and trick her well.
1:55
DNA evidence reveals surprising truth about the identity of a revered 9th-century Viking.
1:34
Plants can help us understand how life rebounds after a mass extinction.
3:35
This trove of mammal fossils paints a timeline of life after the dinosaurs died.
5:44
Stunning new mammal fossils were hiding in plain sight.
