Kamala Harris and Pete Buttigieg have joined other Democratic candidates in unveiling their climate change plans ahead of Wednesday's CNN climate change forum. It will be the first such prime-time event in a presidential campaign.

Kamala Harris and Pete Buttigieg have joined other Democratic candidates in unveiling their climate change plans ahead of Wednesday's CNN climate change forum. It will be the first such prime-time event in a presidential campaign.https://t.co/TjEEpzRodn

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