High yield bonds... trading at par. Also emerging Market stocks and indices: turkey, malaysia, philippines, peru, columbia... there are more.
Wind, solar, etc. have two huge obstacles: math and physics. They just don't add up. I don't watch stocks in those sectors, but would consider shorting them during any serious rally. Nuclear, nat gas and (maybe one day) things like geo-thermal are energy sources with a future.
This. Gold is a real currency that can't be printed. I agree that there could be a huge run up in gold, which will come down, but I do not think it will collapse as more and more countries will eventually revert back to the gold standard. And at the rate of dollars being printed around the world, that standard will have to be pretty large.
Genetics Custom made plants and bacteria. This bubble is already underway. Maybe credit refinancing? This is a market big-enough for a really big bubble!