On Instagram Live Wednesday night, Rep. Alexandria Ocasio-Cortez spoke to critics who laugh and make jokes about her often-repeated statement that "we have twelve years left to cut emissions by at least 50%" to stop the most devastating effects of climate change. "For everyone who wants to make a joke about that, you may laugh, but your grandkids will not," she warned. "So, understand that the internet documents everything." "For those of you who are trying to mock and delay this moment, I mean, I just feel bad for you. I pity you for your role in history right now,"...