The Hill: Extreme summer heat waves and droughts in recent years are the result of climate change, a top federal scientist concludes in a new peer-reviewed study.
The study by James Hansen, director of NASA’s Goddard Institute for Space Studies, could provide new political ammunition for environmentalists struggling to defend and advance climate regulations. Hansen touted the analysis he authored with two colleagues – which will be published Monday – in a weekend Washington Post column.
“These weather…

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