Eric Holthaus May 17
270 → 280 ppm: ~5000 yrs 280 → 290: ~100 290 → 300: ~40 300 → 310: ~30 310 → 320: ~23 320 → 330: 12 330 → 340: 8 340 → 350: 6 350 → 360: 7 360 → 370: 6 370 → 380: 5 380 → 390: 5 390 → 400: 5 400 → 410: 4 410 → 415.7: 2 We are in a climate emergency.