Grist: Sea ice and air pollution are in a bit of a love-hate relationship right now. On the one hand, pollution from extracting and burning fossil fuels is causing global warming, which is melting all the sea ice. On the other hand, other kinds of pollution from burning said fossil fuels is reflecting sunlight and thus delaying said melting. So while sea ices friends are all, That pollution is bad news, man!, ice is all: And it is bad news: Summer sea ice levels in the Arctic were their fourth lowest...