Is our planet warming up by 1 degree Celsius, 2 degrees, or more? Is climate change entirely man made? And what can be done to counteract it? There are myriad possible answers to these questions, as well as scientific studies, measurements, debates and plans of action. Even most skeptics now concede that mankind -- with its factories, heating systems and cars -- contributes to the warming up of our atmosphere.
But the consequences of climate change are still hotly contested. It was therefore something of a political bombshell when unknown hackers stole more than 1,000 e-mails written by British climate researchers, and published some of them on the Internet. A scandal of gigantic proportions seemed about to break, and the media dubbed the affair "Climategate" in reference to the Watergate scandal that led to the resignation of US President Richard Nixon. Critics claimed the e-mails would show that climate change predictions were based on unsound calculations.
Although a British parliamentary inquiry soon confirmed that this was definitely not a conspiracy, the leaked correspondence provided in-depth insight into the mechanisms, fronts and battles within the climate-research community. SPIEGEL ONLINE has analyzed the more than 1,000 Climategate e-mails spanning a period of 15 years, e-mails that are freely available over the Internet and which, when printed out, fill five thick files. What emerges is that leading researchers have been subjected to sometimes brutal attacks by outsiders and become bogged down in a bitter and far-reaching trench war that has also sucked in the media, environmental groups and politicians.
SPIEGEL ONLINE reveals how the war between climate researchers and climate skeptics broke out, the tricks the two sides used to outmaneuver each other and how the conflict could be resolved.
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