Big sperm don't always win the race
When females mate with more than one male, each one's sperm has to compete to get to her eggs. Until now, researchers had thought the fastest sperm would dominate.
When females mate with more than one male, each one's sperm has to compete to get to her eggs. Until now, researchers had thought the fastest sperm would dominate.
Evolution
Jan 31, 2014
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A high school student from Texas has won a $100,000 scholarship for scientific work that could help driverless cars and robots navigate around obstacles.
Other
Dec 4, 2012
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