Ever notice how sharks look a whole lot like aircrafts? Turns out they evolved that shape because they similarly rely on lift to get off the ground! #coolanimalfacts
Transparent glassfrogs 'vanish' at night by hiding red blood cells in liver
Glassfrogs can render themselves nearly invisible while they sleep with a unique trick; they pack nearly 90% of their red blood into one of their organs.
Colon Musk, CEO of GaceX
SarahCPreston