Heat records are again being obliterated. Anyone in New England yesterday has a visceral sense of this after experiencing summer in March.
And the news is coming in that we've breached the dreaded 2 degree average temperature rise. These climate changes aren't linear, so it will likely (hopefully) take some time before we're consistently over that level -- in fact, hopefully we'll never be consistently over that level, because that will be a chaotic and dangerous world -- but if we needed any more evidence that the urgency of this challenge is extreme, we've got it.
More details from Slate: Our Hemisphere’s Temperature Just Reached a Terrifying Milestone
Op-Ed from Bill McKibben: The mercury doesn’t lie: We’ve hit a troubling climate change milestone