SCHOFIELD BARRACKS, Hawaii - The free, family-friendly fourth annual Earth Day Festival is set for 1-4 p.m., at Sills Field, here, April 20.

U.S. Army Garrison-Hawaii, Island Palm Communities and dozens of community organizations have teamed up to share a wealth of knowledge about environmental sustainability with Soldiers and families.

The entire family can look forward to interactive exhibits, live entertainment - and even a few live creatures.

A commemorative Earth Day hat will be provided to the first 200 keiki who complete the Earth Day Passport Challenge.

An E-Watch contest is also part of the fun. The first 200 participants to complete the contest, which involves using their smart phone to decode clues, will have a chance to win prizes.

Anyone bringing recyclables will be entered to win more great prizes. Recyclables include cooking oil, athletic shoes and telephone books; also, e-waste such as computers, printers and TVs, can be dropped off. Government equipment won't be accepted.

Featured exhibitors at the event include the Army Wildland Fire Department; the Department of Agriculture, showcasing invasive species; the Department of Land and Natural Resources, Division of Aquatic Resources; Sea Life Park; the Hawaii Coral Reef Initiative; the Department of Forestry and Wildlife; and U.S. Fish and Wildlife.

Earth Day Festival schedule

Visit for Earth Day details.