See Candidate Page Jay Inslee, Climate Inslee tweets 4/6/19 The last time CO2 levels were as high as they are now, Antarctica was a forest, not an ice sheet. That’s where we’re headed if we don’t start treating climate change as the single greatest existential threat that it is. https://t.co/WzcipnidC3— Jay Inslee (@JayInslee) April 6, 2019