Photos of the week: 5/8 - 5/15

This week's headlines were dominated by tragedies, from a second earthquake in Nepal to the Amtrak accident in Philadelphia and the deadly tornadoes in Texas and beyond. See the most moving and beautiful images from these stories and more in the slideshow above.

Be sure to check back next week for our selection of the best photos from the coming days and, if you missed them, click through last week's best photos below.

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