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Atmosphere

2 days ago
Dark undulating clouds loom over a landscape with a road stretching away from the viewer (Credit: Getty Images)

How microbes living in the clouds affect our lives

Trillions of bacteria, fungi, viruses and single-celled organisms travel the globe high in the atmosphere. Scientists are finding that they play a role in the weather and our health.

2 days ago
Future
22 Mar 2022

What happened to the ozone hole?

Back in the 1990s, the hole in the planet's ozone layer was a pressing global crisis – if we had ignored it, today there would be several.

22 Mar 2022
Future

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