Salwan Georges / The Washington Post via Getty
Global warming is caused by human activity and failure to address it will cost the US dearly. That’s the uncompromising message from a draft of a major US report on climate science.
The full report is due to be published in the spring by the US Global Change Research Program, a body charged by Congress with assessing climatic impacts on the US every four years. But some of the report’s contents are now public, because it has been reviewed by a committee of the …