Moving bikes stay upright—but not for the reasons we thought: Why are bicycles so stable while they're rolling? The explanation you got in your high school physics class is clearly not the full story.
New elastic polymer self-heals in just one minute: A self-healing elastomeric polymer can seal up cuts after about one minute under a UV light. The research brings us significantly closer to getting self-healing polymers to market.
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Elisha Cuthbert Ciara Rachel Hunter Heidi Montag Katharine McPhee
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