60-Second Science

Scientific American

Science & Medicine, Natural Sciences, Technology

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Natural Sciences 9
Science & Medicine 20

Leading science journalists provide a daily minute commentary on some of the most interesting developments in the world of science. For a full-length, weekly podcast you can subscribe to Science Talk: The Podcast of Scientific American . To view all of our archived podcasts please go to www.scientificamerican.com/podcast


Meteorites Delivered Earth's Mineable Gold

September 8th, 2011

Episode 66 of 579 episodes

Isotopes within rocks of different ages show that the gold in Earth's mantle came after the planet formed, delivered by meteorites. Karen Hopkin reports