Weird weather has become a big topic in Texas, as the state continues to struggle with a record-breaking drought and unusually hot temperatures. The climate is also an issue on the presidential campaign trail, with Gov. Rick Perry asserting that he is a "skeptic" that humans are causing the world to warm.

Katharine Hayhoe, a climate scientist at Texas Tech since 2005, spends some of her spare time reaching out to community groups to convey the opposite — that humans are the main cause of climate change, and that ordinary people will feel its impacts. She was the lead author of ...

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