What are the main UK parties promising on climate and is it enough?

Last week more than 400 scientists signed an open letter to
political parties urging ambitious action on the environment to
prevent making Britain and the world ‘more dangerous and insecure’.
Now that the main parties’ manifestos have all been released, Ian
Sample is joined by the global environment editor, Jon Watts, and
the biodiversity reporter, Phoebe Weston, to find out what the
manifestos have to say about nature and climate, and whether anyone
is promising the level of action scientists are asking for. Help
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