Help NASA measure Earth's tree canopy with GLOBE Observer: Trees; sleuth out endangered trees for TreeSnap; learn how cleaner fish support reef ecosystems; and see why NASA is sending cat videos through millions of miles of space. All that and more on this episode of Citizen Science: Stories of Science We Can Do Together! Projects featured in this episode: TreeSnap  GLOBE Observer: Trees  Enviro Champs  Genius Dog Challenge  Reef Life Survey  Image Credits: Redwood cover pic via Flickr Creative Commons Public Domain Jeff Balland Night Trees via Flickr Creative Commons Public Domain Marcos Lomba Tall Pine, via Flickr Creative Commons Public Domain Alan Levine Aspen Trees, via Flickr Creative Commons Public Domain Thepixiesdidit Dragonfly Larva, via Flickr Creative Commons Public Domain Nyffy Water Strider, via Flickr Creative Commons Public Domain Andrew Hazen Bluestreak Cleaner Wrasse photo Brian Gratwicke via Flickr Creative Commons https://creativecommons.org/licenses/by-nc/2.0/ A Giant Moray Eel (Gymnothorax javanicus) with cleanerfish. North Horn, Osprey Reef, Coral Sea Richard Ling https://creativecommons.org/licenses/by-nc-nd/2.0/ Striped Cleaner Wrasse (Labroides dimidiatus) cleaning a Potato Cod (Epinephelus tukula). North Horn, Osprey Reef, Coral Sea Richard Ling https://creativecommons.org/licenses/by-nc-nd/2.0/ A pair of Striped Cleaner Wrasse (Labroides dimidiatus). Fly Point, Port Stephens, NSW Richard Ling https://creativecommons.org/licenses/by-nc-nd/2.0/ Taters Video Footage courtesy NASA/JPL Reef video footage courtesy José Ricardo Paula Podcast Theme, by Kevin Hartnell Additional music, via Free Music Archive: Jason Shaw, Glitch  Jangwa, Hurry Hurry  The Joy Drops, Roll Jordan Roll, Bass Bumper  The Joy Drops, Roll Jordan Roll, Trumpet Blast  Gagmesharkoff, The Confluence  Steve Combs, Pharmacy Party  Steve Combs, Mess