The Kyoto treaty has an estimated cost of between US$150 and $350 billion a year, starting in 2010..

The obvious issue is providing clean drinking water and sanitation to every single human being on earth at the cost of little more than one year of t….

We need to invest dramatically in green energy, making solar panels so cheap that everybody wants them. Nobody wanted to buy a computer in 1950, but ….

Surely the biggest problem we have in the world is that we all die. But we don't have a technology to solve that, right? So the point is not to prior….

There is no question that global warming will have a significant impact on already existing problems such as malaria, malnutrition, and water shortag….

Obviously any group that has to have funding also needs to get attention to their issues..

Im no expert on American politics..

The total efforts of the last 20 years of climate policy has likely reduced global emissions by less than 1 percent, or about 250 million metric tons….

I found university a little dispiriting. I thought I would enter the great halls of Plato, but instead I entered the halls of an intellectual sausage….

I really try to say things as they basically are and it so happens that it is a good message that things are getting better, but there are still prob….

If every country committed to spending 0.05 per cent of GDP on researching non-carbon-emitting energy technologies, that would cost $25 billion a yea….

Listen, global warming is a real problem, but it's not the end of the world. A 30-centimetre sea level rise is just not going to bring the world to a….

Think on a 50-year scale, which is a much more natural time-scale for global warming. The US is right now spending about 200 million dollars annually….

I'm a vegetarian, but I don't expect other people not to eat meat..

Global warming is real - it is man-made and it is an important problem. But it is not the end of the world..

When thinking about the future, it is fashionable to be pessimistic. Yet the evidence unequivocally belies such pessimism. Over the past centuries, h….

...children born today-in both the industrialized world and developing countries-will live longer and be healthier, they will get more food, a better….