This story appears in the February 2018 issue of National Geographic magazine. Jefrin Bayona is ... and the typically outgoing and buoyant teen is clearly exhausted. He arrives at school five ...
This story appears in the January 2015 issue of National Geographic magazine. In the late 1980s ... Many years later, when the kids had entered their teens, the researchers took MRI images ...
This story appears in the December 2012 issue of National Geographic magazine. On a gentle slope ... limbs while the temperature wobbles in the teens. They handle the weight and the cold with ...
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