5.0
English/4 min./2013
Documentary
13-year-old inventor Aidan has discovered that trees use a mathematical formula to gather sunlight in crowded forests. Now he wonders why we don't collect solar energy the same way.
6.0
7.6
5.5
5.3
6.8
6.7
5.6
6.2
5.8
5.4
5.7
5.9
7.7
7.5
6.1
7.1
8.2