an image from the US government EPA "Sunwise" program. I converted it from PDF format, and removed all the "sunwise" logos. the source link is here - http://www.epa.gov/sunwise/doc/mission_story.pdf

Tags: media, clip_art, public_domain, image, png, svg, epa, epa_sunwise, group, classroom, board, blackboard, whiteboard, point, cartoon, epa, epa_sunwise, group, classroom, board, blackboard, whiteboard, point, cartoon