Earth Day - Founded in 1970 as a day of education about environmental issues, Earth Day is now a globally celebrated holiday that is sometimes extended into Earth Week, a full seven days of events focused on green awareness. The brainchild of Senator Gaylord Nelson and inspired by the antiwar protests of the late 1960s, Earth Day was originally aimed at creating a mass environmental movement. It began as a “national teach-in on the environment” and was held on April 22 to maximize the number of students that could be reached on university campuses. By raising public awareness of air and water pollution, Nelson hoped to bring environmental causes into the national spotlight. (http://www.history.com/topics/holidays/earth-day)
I find it of interest that it wasn't until 2015 that the Paris Environmental Accord brought 196 nations together with some intention of doing something about the climate change of our earth.
Earth Ball game (New Games) - see the YouTube video below.
I don't know when New Games came about, but they were very popular at Earth Day celebrations, a way for all that energy to be utilized in a fun way.
So when Sepia Saturday showed a crowd holding up a huge ball, I immediately flashed back to those Earth Ball games we played in the 70s.
Go over to this site and see what other bloggers have shared on this theme...