We did it.
And now we have to fix it.
It’s hard to imagine drawing any other conclusion from the latest news on global warming, this time from the preeminent body on the topic:
The odds are at least 95 percent that human activity is the cause of warming of the planet since the 1950s, a United Nations panel of experts has concluded in a draft report leaked to Reuters and the New York Times. The report, which may change slightly in its details but isn’t expected to deviate from its broad conclusions, will be finalized in late September.