I don't remember the alligator thing at school - probably had my radio on at the time.
However, I clearly remember EVERYONE telling us that the oil was going to have run out by 2020 (I believed it, which is why my garage is full of half empty cans). Looks like they might have got that one wrong.
Currently, I believe in the greenhouse effect and global warming. It worries me so much that I've limited myself to 3 vehicles, several computers, TV's, central heating, buying tons of supermarket food for my family and pets, countless other consumer items including a nice size house, foreign holidays and regular unnecessary trips out, just because I like to drive, when I could have been sooo much more greedy. Oh - and I separate my waste. God, we're a selfish bunch of creatures, aren't we? Really - seriously.