Nikon Digital + 35mm/f2@somewhere taiwan.
Earth Day, used for two different observances, both held annually during spring in the northern hemisphere. <b>These are intended to inspire awareness of and appreciation for the Earth's environment.</b> The United Nations celebrates Earth Day each year on the vernal (March) equinox; while a global observance in many countries is held each year on April 22.
<i>From Wikipedia.</i>