|Remain a member of Khan Academy for 4 years|
|Energy point(s) awarded||0|
Bristlecone is an Earth badge. To earn it, the user has to remain a member of Khan Academy for 4 years. The membership on a profile is rounded to the nearest number of years. It is necessary to hit the anniversary date (the date he/she joined Khan Academy) to acquire this badge.
- This badge is named after the Bristlecone trees.