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Five years of Covid: Part two

Five years on from the emergence of Sars CoV-2, what have we learned?

• 27 mins

First US avian flu fatality

H5N1 bird flu is still spreading across farms in the US and claims its first human life

• 30 mins

AI antivenoms and vegetarian hominids

New types of snake-bite anti-venoms are designed by AI.

• 34 mins

Arctic carbon starting to flip

Thirty per cent of the Arctic is switching from carbon sink to carbon source.

• 26 mins