PhotoBlog on MSNBC has posted a fantastic selection of northern lights shots from the past few days, including Icelandic photographer Olafur Haraldsson's stunning time-lapse footage of the aurora's shimmering green glow. Check it out here.
Retired NASA astronaut Ron Garan is also a highly decorated fighter pilot as well as an explorer, entrepreneur, and humanitarian who believes that appropriately designed and targeted social enterprise can solve many of the problems facing our world. In the first half, he discussed his transformative experiences working aboard the International Space Station.
In the latter half, medical sociologist Robert E. Bartholomew, PhD shared his latest work uncovering the little-known scientific evidence underlying supposed hauntings, immortalized in familiar Hollywood films including The Exorcist, Poltergeist and The Conjuring.