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Learn moreTeach girls bravery, not perfection - Reshma Saujani
lesson duration 12:40
1,143,637 views
Why you don’t hear about the ozone layer anymore
lesson duration 08:35
6,786,588 views
Why humans are so bad at thinking about climate change
lesson duration 09:45
2,271,995 views
What would happen if the world went vegetarian?
lesson duration 03:47
7,293,683 views
Why can't we get power from waves?
lesson duration 03:16
1,677,820 views
Nature's mood rings: How chameleons really change color
lesson duration 03:39
1,190,828 views
How did the deepest part of the ocean get so polluted?
lesson duration 04:41
1,054,444 views
The most horrifying parasites on the planet
lesson duration 03:01
2,391,285 views
How do pelicans survive their death-defying dives?
lesson duration 03:48
2,324,440 views