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The growing international ban on the trade of ivory from elephant tusks has been increasing the focus on harvesting the illicit material from an unusual source: the tusks of long-extinct mammoths, preserved in the frozen Siberian tundra. Out of the 72 tons of mammoth ivory exported by Russia in 2017, 80 percent was to China–the world’s largest market for the substance–and now that China has instituted a ban on their ivory trade, the market for frozen mammoth tusks may be heating up.
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Scientists have known since the early nineteenth century that the Earth’s magnetic north pole wanders slowly over time, a phenomenon that cartographers have kept track of to ensure the accuracy of navigational charts and any other fields that might be affected by this magnetic meandering. Over the centuries, this drift has been slow, but in recent years the movement of magnetic north has accelerated for reasons that aren’t completely understood, and this rapid movement has prompted researchers to update the map of the planet’s magnetic field a year ahead of schedule.
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This week we explore the new findings about the Nazca Mummies with William Galison. The mummies have been called every sort of hoax you can imagine, but new data tells a very different story. Listen as William, who has been involved with the project from the beginning, tells the story of the latest press conference, AND the extraordinary story BEHIND it.
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When you have a man with the last name "Knight" and a man named "Excalibur," naturally, you have a roundtable. But instead of going medieval, this one goes into the heart of all high strangeness experiences.read more