Liberals, put the shoe on the other foot. Why do you deny when life begins? Scientists point to conception. No scientist says that the third trimester has any event as significant. Abortion is (scientifically and semantically) murder, but we choose a non-scientific event to say what is morally and legally acceptable.
When I "deny" Global Warming (oops - I mean Global Climate Change), I am simply asserting that it isn't "settled science." Sure, CO2 levels rising is scary, but is it as scary as the 1970 fuel shortage or the 2008 housing crisis? Why don't the predictions hold true? Why are the headlines false? For example, you all know the ice caps are melting. But in fact, that's only the Arctic. 2014 saw record Antarctic ice, and 2016 is running just a bit above average. Islands going under? Sure, some are going away. But a recent study says that while 20% have eroded, 40% have stayed the same size while 40% have gained.