2015 Was Earth’s Hottest Year By Wide Margin

CBS DFW - Last year wasn’t just the Earth’s hottest year on record — it left a century of high temperature marks in the dust.

The National Oceanic Atmospheric Administration and NASA announced Wednesday that 2015 was by far the hottest year in 136 years of record keeping. For the most part, scientists at the agencies and elsewhere blamed man-made global warming, with a boost from El Nino.

"It's getting to the point where breaking record is the norm," Texas Tech climate scientist Katharine Hayhoe said. "It's almost unusual when we're not breaking a record."

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