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.

Europe can learn from US on how not to do net neutrality

We are entering a time of great uncertainty for internet freedom following two recent events. Both occurred in the US but have repercussions for Europe, where the debate on the future of net neutrality is warming up. But ...

Explainer: The engineering challenges of HS2

Next year, high-speed rail travel will celebrate its 50th birthday. In 1964, Japan put into service the first Shinkansen line, from Tokyo to Osaka. Its trains initially operated at speeds of up to 210 km/h, much slower than ...

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