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Yellowstone National Park's Grand Prismatic hot spring is pictured in this handout photo

Hot times at Yellowstone: huge magma chamber found deeply buried

Yellowstone National Park’s Grand Prismatic hot spring is pictured in this undated handout photo obtained by Reuters April 23, 2015. (Reuters) – Deep beneath Yellowstone National Park, one of the world’s most dynamic volcanic systems, lies an enormous, previously unknown reservoir of hot, partly molten rock big enough to fill up the Grand Canyon 11

Obama signs the bill H.R. 2 Medicare Access and CHIP Reauthorization Act of 2015, the so-called Medicare 'doc fix,' in the Rose Garden at the White House in Washington

Obama signs bill fixing Medicare doctors’ pay

U.S. President Barack Obama signs the bill H.R. 2 Medicare Access and CHIP Reauthorization Act of 2015, the so-called Medicare ‘doc fix,’ in the Rose Garden at the White House in Washington April 16, 2015. (Reuters) – U.S. President Barack Obama signed a bill into law on Thursday that repairs the formula for reimbursing Medicare physicians after Congress,

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