Most of the matter in the universe is neither bound up in stars or planets nor dispersed in clouds of "ordinary" particles. But what is it made of?
How did the chicken cross the sea? Polynesians brought them to S. America before 1492.
Astronomers of the distant future won’t be able to deduce the nature of the universe.
Tropical amphibians and reptiles are in decline: is climate change to blame?
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Hear author Xiaoming Wang interviewed by Vittorio Maestro, Editor in Chief of Natural History. (MP3, 17 minutes) |