Climate Change
Scientists Warn of Summer Heat Spikes as Global Warming Edges Toward 2C
Researchers say fossil fuel burning and other human activities caused nearly all the rapid warming of the past decade.
Former federal climate experts warn that atmospheric carbon dioxide concentrations hit a record high in May and that the monthly average global temperature this summer could rise as much as 3.5 degrees Fahrenheit (1.9 degrees Celsius) above the pre-industrial benchmark used to measure the heating from greenhouse gases.
Scientists Warn of Summer Heat Spikes as Global Warming Edges Toward 2C