Sea otters fight global climate change by helping cultivate kelp forests. Sunita Williams reaches out to touch a star before fixing the International Space Station with a toothbrush. Plus, when London runs out of space on the road they may move bike lanes to the sky!
LINKS TO THIS WEEK'S STORIES:
Spacewalking Astronaut 'Touches' the Sun
Sea Otters May Be Global Warming Warriors
Excellent Idea of the Day: Bike Lanes in the Sky
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