President Barack Obama!

Hippy; without America taking the lead there is no hope on climate change so who leads America affects us all. The worst thing Bush did was first to deny that climate change was man-made and then drag his heels and so waste 8 years.

Absolutely right. America produces a massively disproportionate amount of pollution. It is also a country to whose values many in the developing world aspire. They want to mimic the lifestyle of America. They want big polluting cars etc. America must take a lead or else we are all doomed.

Earlier this year I was taken to a baseball match in Phoenix. We were told that the roof of the stadium closed if it got too hot and so they could turn on the airconditioning and cool the 60,000 spectators. That is America's stand on pollution and the environment. That scares me.