Deliberately modifying the earth's atmosphere would be a desperate gamble with significant risks. Yet the more likely climate change is to cause devastation, the more attractive even the most perilous attempts to mitigate those changes will become.

Most reputable scientists agree that climate change is real and that the effects are likely to be bad. But nobody can say for sure exactly what 'bad' means. The safest and most equitable way out of this horrific mess is simple: cut fossil-fuel emissions.

It indicates that the reliability of the river will decrease with climate change. And that model doesn't take into account population growth and the ensuing increase in demand. We can't do business as usual.

It is really a mission that affects global change. We will have a better quantitative understanding of climate change and a better basis for making policy decisions.

If climate change predictions are accurate you will expect…more intense and extreme rainfalls.

The measurements show long-term trends. Glaciers react to climate change, and warmer temperatures in the Alps are reflected in the results.