In 1962, the first spacecraft humans ever sent to another planet — Mariner 2 — went to Venus. The first planet on which humans ever landed a probe — also Venus! But since then, Mars has been the focus of planetary missions. NPR science correspondent Geoff Brumfiel makes the case for why humans should reconsider visiting to Venus.For more science reporting and stories, follow Geoff on twitter @gbrumfiel. And, as always, email us at shortwave@npr.org.