Join the Alaska Zoo and the “hundreds of millions of people, businesses and governments around the world to support the largest environmental event in history, earth hour.” Bring a 100% beeswax or soy candle for a candlelit walk through the zoo, enjoy a presentation on Earth Hour, and some symbolic animal enrichment with the zoo’s polar bears. Zoo admission is free to this event. Donations accepted to help fund Arctic animal conservation and education. AlaskaZoo.org.