The day the dinosaurs died
Fossil evidence shows the immediate effects of a deadly asteroid impact which changed the world, and is thought to have led to the extinction of many species including dinosaurs.
A remarkable new fossil find shows a record of events in the minutes and the hours that followed
the impact of a 10km wide asteroid. The fossils show how plants and animals were thrown up into the atmosphere before crashing down again.
Early whales came from India and Pakistan and migrated from Asia to the Americas 鈥� but at the time they looked more like dogs or giant otters. A legged fossil find from Peru shows an intermediate stage before they evolved into fully marine mammals.
Wood is used extensively as a building material, but new research has developed a transparent form of wood which can also act as an insulator. The researchers behind the new material say it will provide an energy efficient alternative to glass and also plastic foam building materials.
And detectors Ligo And Virgo are switched on again, to search for more gravitational waves revealing the hidden workings of space.
(Picture: Artwork of Tyrannosaurus Rex dinosaur fleeing a hail of meteorites. Credit: Copyright: Mark Garlick/Science Photo Library)
Presenter: Roland Pease
Producer: Julian Siddle
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- Thu 4 Apr 2019 19:32GMT大象传媒 World Service except South Asia
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