In Our Time: Science

BBC Radio 4

Scientific principles, theory, and the role of key figures in the advancement of science.

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In Our Time: Science

Episodes (293)

Feb 19th The Mariana Trench
Jul 10, 2025 The Evolution of Lungs
Jun 5, 2025 Lise Meitner

In Our Time: Science

Feb 19, 2026
58 minutes
53 MB

Misha Glenny and guests discuss one of the wonders of the natural world. In 1875 in the western Pacific, the crew of HMS Challenger discovered the Mariana Trench which turned out to be deeper than Everest is high, by two kilometres. Trenches like Mariana form when one tectonic plate slips under another and heads down and there are around fifty of them globally. While at one time some thought it was too dark and deep for life there and others wildly imagined monsters, the truth has turned out to be much more surprising. With Heather Stewart, ...

In Our Time: Science

The Mariana Trench

BBC Radio 4

00:00 -58:04