This year, Space Day falls on May 22. Vertebrate Flight Exhibit Birds are vertebrates. Human beings are vertebrates. Birds flap their wings to fly.
Human beings climb into huge metal airplanes to fly.
How humbling for us. This online exhibit explores the phenomenon of vertebrate flight. A Quick Virtual Nuclear Power Plant Tour Let's face it. We depend too much on fossil fuels. This reality continues to push the nuclear power industry forward as a real alternative.