Sign In
We'll never share your email with anyone else.
Reset Password

Enter your email address and we'll send you a link to reset your password.

Back to Sign In

Big History Season 1 Episode 6 Defeating Gravity 2013

Flight takes more than wings. We need the right kind of air, the perfect materials cooked up over billions of years, and cosmic forces that are just right for us to leave the ground without tumbling off into space. Big History reveals how planet Earth is the perfect planet for flight.

Download : MKV
Download : MP4

Similars

Recommendations