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Interview: Dark Matter = Black Holes? with David Kaiser
Dark matter remains one of physics' biggest open questions. MIT physicist David Kaiser joins Hakeem Oluseyi to explore the evidence, and why primordial black holes, tiny objects from the Big Bang's earliest moments, may answer it. Going back to Stephen Hawking’s early explanations of the universe, this new idea may be based on principles astrophysics has been using all along.
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53:31
Who created the Nazca lines and why? New clues to one of the greatest ancient enigmas.
53:43
Ancient footprints provide new evidence of humans and extinct giant beasts of the Ice Age.
53:16
Sir David Attenborough explores a site with traces of ancient mammoths and Neanderthals.
53:30
In the Arctic, enormous releases of methane, a potent greenhouse gas, threaten the climate
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53:17
Intrepid paleontologists discover that dinosaurs thrived in the Arctic’s cold and dark.
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53:28
Take a tasty look at insect foods that could benefit our health and our warming planet.
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53:28
Join the hunt for the universe’s most common—yet most elusive and baffling—particle.
53:36
As state-legalized cannabis spreads, NOVA explores its little-known risks and benefits.