60m •
1997
The long running, often bitter scientific debate over the origin of birds and the evolution of flight.
2009•
5.6
1988•
5.5
1998•
10.0
2001•
7.6
1996•
0
1994•
0
2020•
6.5
2017•
0
2013•
7.1
2008•
3.8
2008•
7.0
2024•
8.0
NOVA • US
Budget: $0
Revenue: $0
