a couple weeks ago Janet Yellen warned that net-zero carbon would cost about 2.5 trillion that's cheaper than the pandemic. no reason it couldn't have been don

a couple weeks ago Janet Yellen warned that net-zero carbon would cost about 2.5 trillion that's cheaper than the pandemic. no reason it couldn't have been done already. i no longer consider climate change a hard problem, the only hard problem is building political momentum without getting shot