Simplify the following text for a Grade 5 native English-speaking person.
Original: The group was founded in 2005 by Joss Garman , Richard George and Graham Thompson In January 2008 Joss Garman was named by The Guardian as one of its `` 50 people who could save the planet '' for his campaigning work around aviation .
Simplified: Plane Stupid was started in 2005 by Joss Garman , Richard George and Graham Thompson .