Scientists Mine 16th Century Ship Logs for Geophysical Research

As ships explored the world from the Age of Sail through 20th century, mariners kept detailed navigation records using the Sun and stars. Scientists scoured these ship logs, many of which are preserved in European libraries, for clues about Earth’s magnetic field. The work, published in 2000, created the first-ever magnetic field map for the past 4 centuries.

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E24 Part 1- (Hope) Diamonds are Forever

Mineralogist Jeff Post has a one-of-a-kind job: he’s curator of the National Gem and Mineral Collection, a collection of over 375,000 rock and mineral specimens housed at the National Museum of Natural History (NMNH) in Washington, D.C. In this episode, Jeff describes his day-to-day work of maintaining and growing this invaluable collection, which includes being personally responsible for the Hope Diamond and countless other treasures.

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Centennial E9 – The Sun and the Exploding Sea

In 1972, in the waning years of the Vietnam War, U.S. military pilots flying south of Haiphong harbor in North Vietnam saw something unexpected. Without explanation, and without warning, over two dozen sea mines suddenly exploded. While the phenomenon was never officially explained, it piqued the interest of space scientist Delores Knipp.

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E6 – Bonus Clip: Newspaper is the New Duct Tape

Check out this clip that didn’t make it into our recent episode, The Secret Lives of Tide Gauge Operators, with Stefan Talke about some correspondence he found on how operators treated their equipment.             Transcript Shane Hanlon:  Hey, Nanci. Nanci Bompey: Hi, Shane. Shane Hanlon:  Alright, I wanted to ask…

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