David Martin is combining science with flying as he demonstrates pouring water from a bottle into a cup while piloting an airplane. But is he really pouring the water? See if you can figure out what exactly he's doing in this insanely cool clip. 

Speaking of airplanes, a replica of an airplane form the early 1900s took a nosedive in Brazil. Fortunately, not too much damage was done — but it just goes to show how difficult flying planes would still be if technology hadn't come so far.