Americans will celebrate Earth Day 2000 on Saturday. The theme this year is "Clean Energy Now."
* Earth Day celebrations started in 1970, an outgrowth of the social activism of the 1960s. It was originally thought that a healthy environment with clean air and water was one subject that all people worldwide--east, west, liberal, conservative, young, old, rich, poor--could easily agree on.
But unfortunately, 30 years later, organizers still cannot agree on exactly when to celebrate Earth Day, so there are two. International Earth Day, organized by the United Nations, coincides with the vernal equinox and was celebrated this year on March 20. The American Earth Day celebration, which grew out of former U.S. Sen. Gaylord Nelson's 1969 call for a national teach-in on the environment, is April 22. Check out http://www.earthday.net.
* Locally, Tree People will plant 500 oaks and sycamores Saturday, 9 a.m.-1 p.m., at Hansen Dam Park, 11850 Foothill Blvd., Pacoima. (818) 753-4600.