But not too late for 4. Urgent action needed to prevent worst-case climate change scenarios and limit repercussions of abrupt runaway climate change..... OR, that's what I used to think, 3 years ago; NOW I think it is indeed too late; we're f'd. Tipping points have tipped. Positive feedback effects in play. Bring on the methane. Abrupt climate change on the horizon. Exponential changes will escalate. Homo sapiens may not survive the current on-going 6th mass extinction.
these videos are from Nov. 2015, so are actually a bit out-of-date on some recent worrying developments, like increasing glacier melt in Greenland, increasing permafrost melt, wildfires in Siberia, heatwaves in India, Europe, N.Am, etc etc.
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