conv: I had a big presentation yesterday but I'm pretty sure I nailed it! I had a big presentation yesterday but I think I nailed it! Noice!  What was it about? I had to explain global warming to my son's Boy Scout troop. Very cool_comma_ are you a scientist? Nope_comma_ just a mom.  I had to do some research on the internet and it was a real eye-opener for me.  I believe in global warming but a lot of the facts on both sides of the argument surprised even me.