Everyone quit breathing!

The Obama administration is expected to name carbon dioxide a pollutant today – which makes it easier to regulate without Congressional approval.  According to second grade science class, carbon dioxide is one of the essential ingredients for life – plants need it for photosynthesis.   Still, too much of anything is bad, which begs the question of whether dihydrogen monoxide – a substance which can now be found on over three quarters of the Earth’s surface – is next: