Humans, unless aided with oxygen mask find difficulty in going to higher altitudes. Even a slight increase in altitude causes breathing related problem in humans. But unlike humans, birds are very well adapted to fly high without any problem. And recently it has been found that apart from birds, even bumblebees are capable of flying at great high. Wondering how high- higher than Mount Everest, which measure 8,848 meters (29,029 feet) above sea level.
Read MoreBumblebees Can Steer Higher Than Gaint Mount Everest
