Crop Yields Falling in the Heat - Naked Scientists NewsFLASH - 09.05.11

In this NewsFlash, how box jellyfish navigate by seeing the shape of the objects above them, why researchers have trapped anti-hydrogen for an extended stay and how a changing climate has reduced global corn and wheat crops. Plus, how the very first exposure to nicotine causes changes in the brain's reward system, potentially strengthening future addictions.