9,836,167 views
527,737 views
219,646 views
362,737 views
1,706,631 views
518,530 views
1,102,122 views
435,896 views
1,171,811 views
462,036 views
252,325 views
3,386,740 views
786,268 views
490,782 views
1,692,225 views
607,733 views
969,780 views
704,125 views
2,136,958 views
290,773 views
1,225,490 views
1,392,605 views
928,453 views
1,310,002 views
Only students who are 13 years of age or older can create a TED-Ed account.