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Remains are believed to be from more than 200 U.S. soldiers.
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Sombra is so good at her job that she has her own armed guards.
Superbugs are diseases that most antibiotics cannot kill.
Students get healthy food, learn about the environment, and get exercise.
Some effects of climate change are large. Others are small.
Glass panels are replacing metal fence.
Olympic officials want the 2020 Games there to be smoke-free.