SEX IN THE COSMIC CITY

摘要

If there's one thing people are good at, it's making more people. We're such prolific baby-makers that 7 billion of us now roam the planet. But our reproductive skills may soon be put to the test. Whether from overpopulation, environmental destruction or just for the sake of exploration, we'll want to reach out and settle alien planets, too. And Mars will need moms - and dads. But given the harsh radiation prevalent throughout space, and the challenges of reproducing in low gravity, that's easier said than done.