NASA has announced new evidence for a vast ancient ocean on Mars, while the discovery of an ancient stone tool in eastern Oregon may date as far back as 15,800 years ago, predating the Clovis culture. Have you heard of the Fairy Investigation Society? Some of its archives of strange sightings in the UK were recently unearthed. Just two days shy of the one-year anniversary of missing flight MH-370, Wired reviews some of the craziest conspiracy theories behind the disappearance. A longer standing mystery, that of the Black Knight satellite, has recently gotten attention on the Internet. Could the signals Tesla picked up "from another world" in 1899 have been from the Black Knight?