This time they proved that man could work outside a spacecraft. Aldrin clambered awkwardly into the void, spending five hours photographing star fields.
In the US alone, 127 billion plastic bottles are purchased every year, according to one estimate.，这一点在新收录的资料中也有详细论述
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Researchers claim to have found the first conclusive case of sex ‘distortion’ in people. Plus, stem cells could treat spina bifida and how 30 years of Pokémon has influenced science.，更多细节参见新收录的资料
Space exploration
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