If English teacher (and citizen scientist) Hanny van Arkel can discover a rare astronomical object in her spare time, maybe you can too.
Hanny van Arkel was listening to a lot o...
Video playlists about TEDx
The 10 most popular TEDx talks
TEDx events unleash fresh ideas from local communities. Close to 50,000 talks have been given at 10,000 events since the program launched in 2009. Below, the 10 most-watched TEDx talks posted to our homepage.