Children ask the NASA astronaut to go into space

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Karen Nyberg, who has been in space twice, answers the questions of children in elementary school.

Porpoises picked from shallow water

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The young woman was trapped in Grange near Grangemouth.

Blue Planet: Plankton bearing the name of the David Attenborough series

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University College London (UCL) scientists decide to honor Sir David Attenborough and his team.

Gorilla Gorilla gives birth to the Smithsonian National Zoo

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Calaya, the western gorilla of the lowlands, gave birth to the Smithsonian National Zoo in Washington, DC.

NASA's Tess Planet Hunter: What are the stars like?

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The British astronomer Bill Chaplin demonstrates the sounds of stars and why it is useful to know them.

100 years of chemical weapons

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From chlorine to novikok, Hamish leads from Bretton-Gordon through the history of chemical weapons.

The Virgin Galactic spacecraft completes the test flight

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The supersonic test flight of its spaceship SpaceShipTwo was the first since the accident of 2014.