Lewis and Clark statuesMarch 23, 1806: After an arduous two-year journey of discovery across North America, explorers Meriwether Lewis and William Clark (statues at right) break camp on the Pacific Coast of Oregon for the return trip east bringing amazing stories and specimens of wildlife.

March 23, 1980: Presidential candidate Ronald Reagan says, "I've said it before and I'll say it again. The U.S. Geological Survey has told me that the proven potential for oil in Alaska alone is greater than the proven reserves in Saudi Arabia." Actually, the Saudi reserves are about 17 times as large as those known to exist in Alaska.

March 23, 2001: David McTaggart, an early leader of Greenpeace, dies in an auto accident in Italy.

Photo: koocbor/Flickr

This feature is compiled by Peter Dykstra, an MNN contributor and publisher of Environmental Health News and The Daily Climate.