Happn would show you people whom you crossed paths with and where, which could either solve the problem of Craigslist missed connections or open a Pandora's box of issues, including constantly being shown co-workers because you're in the same proximity. (slate.com)
Actions to avoid: Your baby being in the same room as someone smoking Never smoke while pregnant It is advised not to sleep with your baby (on a bed, sofa or armchair) Avoid contact (particularly sleeping in the same proximity) of people who have been smoking, drinking or taking drugs Monitor your baby's temperature to ensure it does not get too hot or too cold. (bounty.com)
The same proximity to Mars that will one day doom Phobos makes it an extremely attractive staging post for human explorers. (discovermagazine.com)