By Humain A.
Bangladesh, Age 9
The Earth may be much more sensitive to global warming than previously thought, according to the first results from a massive distributed-computing project.
The project tested thousands of climate models and found that some produced a world that warmed by a huge 11.5°C when atmospheric carbon dioxide concentrations reached the levels expected to be seen later this century.
This extreme result is surprising because it lies far outside the 1.4°C to 4.5°C range predicted by the Intergovernmental Panel on Climate Change (IPCC) for the same CO2-level increase - a doubling of CO2 concentration from pre-industrial times. But it is possible the IPCC range was wrong because its estimate is based on just a handful of different computer models.