The Child and Nature Network website has a Training section and a page called Tools & Resources- great for people who want to help kids get outside.
Salt Lake City Parks Department Trails & Natural Lands - shows you where trails are and also updates about fun events
Salt Lake City Urban Forestry - has a map of all the trees they manage! You can see the names of the trees in your neighborhood!
The Natural History Museum of Utah demonstrates ways you can participate in science and hosts events called Bioblitzes to document and catalog local nature. More info here: