This year's Earth Day theme - Walk, Bike, Row to an Earth Day Event Around the World - exemplifies ways to have fun yet help the environment. Earth Day is April 22 -- a Tuesday this year. If you can't play hooky, there are lots of Earth Day Activities, Events and Trips on surrounding weekends. If you want to attend a concert in San Francisco, New York or other cities; stay in a green hotel in a new locale; or participate in at a variety of Earth Day fairs, check out the links below the Earth Day Activities, Events and Trips article.