Talk:Energy Point Leaderboard/@comment-25304012-20140911195719/@comment-25297120-20140912192624

Category:Earth Badges is a category in which has some interesting badges: Sub-light Speed, 299,792,458 Meters per Second, Great Question, Incredible Question, Great Answer, Incredible Answer, Great Inspiration, Incredible Inspiration.

To earn these badges multiple times, users have to spend huge amount of time watching videos, practicing exercises, programming... Beside, the acknowledgement of Khan Academy community is important also.