May 1 — Linnaeus Publishes “Species Plantarum” (1753)
May 2 — “Peter and The Wolf” Premieres (1936)
May 3 — Vagn Walfrid Ekman, Swedish Oceanographer, Born (1874)
May 4 — Eugenie Clark, The Shark Lady, Born (1922)
May 5 — Frederick Lincoln, Pioneer of Bird Banding, Born (1892)
May 6 — Lassen Volcanic National Park Created (1907)
May 8 — David Attenborough Born (1926)
May 9 — Thames River Embankments Completed (1874)
May 10 — Birute Galdikas, Orangutan Expert, Born (1946)
May 11 — “HMS Beagle” Launched (1820)
May 12 — Farley Mowat, Author of “Never Cry Wolf,” Born (1921)
May 13 — St. Lawrence Seaway Authorized (1954)
May 14 — Lewis and Clark Expedition Began (1804)
May 15 — Declaration of the Conservation Conference (1908)
May 16 — Ramon Margalef, Pioneering Ecologist, Born (1919)
May 17 — Australian BioBanking for Biodiversity Implemented (2010)
May 18 — Mount St. Helens Erupts (1980)
May 19 — Carl Akeley, Father of Modern Taxidermy, Born (1864)
May 20 — European Maritime Day
May 21 — Rio Grande Water-Sharing Convention Signed (1906)
May 22 — International Day for Biological Diversity
May 23 — President Carter Delivers Environmental Message to Congress (1977)
May 24 — Bison Again Roam Free in Canada’s Grasslands National Park (2006)
May 25 — Lacey Act Created (1900)
May 26 — Last Model T Rolls Off the Assembly Line (1927)
May 27 — Rachel Carson, Author of “Silent Spring,” Born (1907)
May 28 — Sierra Club Founded (1892)
May 29 — Stephen Forbes, Pioneering Ecologist, Born (1844)