Associated Press: After an all-night session, the United Nations' expert panel on climate science was scrambling Saturday to finish a report on global warming that the UN's environment agency said offers "conclusive evidence" that humans are altering the Earth's climate system.
Combining the findings of three earlier reports, the report by the Intergovernmental Panel on Climate Change is also expected to describe how climate impacts, including melting Arctic sea ice and rising levels, are already happening and...