John Kerry, the U.S. special presidential envoy for climate, will leave the administration later this winter, and plans to help President Biden’s campaign, Axios has learned.

Why it matters: Kerry, 80, thinks Biden’s reelection is the “single biggest” difference that can be made this year for climate progress at home and globally, a source close to the administration told Axios.

[Just what the Biden campaign needs — another octagenarian whose voice drips with condescension tp argue that Democrats are the party of the future. After all, Kerry did that so well in 2004! — Ed]