If there is one thing that distinguishes the hummingbird from the rest of the avian kingdom, it is the rapidity with which their wings move--about 70 times per second while in flight. Katherine Satizabal in Mexico captures the kinetic energy of the...
If there is one thing that distinguishes the hummingbird from the rest of the avian kingdom, it is the rapidity with which their wings move--about 70 times per second while in flight. Katherine Satizabal in Mexico captures the kinetic energy of the...