Gov. Jerry Brown (left) meets with Prime Minister of India Narendra Modi in San Jose, Calif., on Sept. 27. Brown has been brokering his own international agreement on climate change. Jeff Chiu/AP hide caption

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The holidays are all about generousity, gratitude, and spending time with the people we love. But we all know the whole "spending time with the people we love" part has its challenges. Hidden Brain is here to help. iStock hide caption

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Brain imaging experiments found patterns associated with attention span. iStockphoto hide caption

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A biologist holds a slide prepared for testing in a micro array for biological hazards at the Lawrence Livermore National Laboratory in Livermore, Calif. Ben Margot/AP hide caption

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Bryan Bashin, CEO of the LightHouse for the Blind and Visually Impaired, in San Francisco, started losing his sight in his teens. "Don't just hide," he advises others. "This is not some kind of deep loss. This is just another side of being human." Jeremy Raff/KQED hide caption

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