1,589,761 views
1,034,503 views
634,055 views
1,296,644 views
407,493 views
763,366 views
454,892 views
239,410 views
480,423 views
63,288 views
5,095,401 views
378,418 views
3,789,422 views
2,307,235 views
2,161,289 views
1,433,099 views
1,098,496 views
1,217,761 views
430,223 views
7,570,878 views
434,271 views
523,445 views
435,744 views
694,679 views
Only students who are 13 years of age or older can create a TED-Ed account.