Spellbound, Larry Correia. Volume Two of the Grimnoir Chronicles, after Hard Magic. Go read 'em both.
Death From The Skies!, Philip Plait. Holy Celestial Armageddon, Batman! Had to stop and remind myself periodically that 100% "gonna happen" events 30 billion years in the future aren't worth sweating...
Practical Guide to Everyday Carry Gear, 11 interviews conducted by Personal Armaments Podcast.
Civilization: The West and the Rest, Niall Ferguson.
Bad Astronomy, Peter Plaitt
Throw Them All Out, Peter Schweizer