Incredible Slo-Mo Footage Reveals Hummingbirds Are Truly Nature's Fighter Jets

Most birds get all the lift they need to fly with the downward stroke of their wings--meaning there's no upward force being produced as they raise them back up. Hummingbirds, on the other hand, produce lift with both their upward and downward wing strokes, creating air vortices that the tiny birds use to fly with...