Say, Thomas (1787–1834), a United States naturalist. He wrote the first major American works on insects (American Entomology, 3 volumes, 1824–28) and shells (American Conchology, 2 volumes, 1830–34). Say was born in Philadelphia. He served as zoologist on the United States government expeditions, led by Stephen H. Long, to the Rocky Mountains (1819–20) and the source of the Minnesota River (1823). Say was curator of the American Philosophical Society, 1821–27, and professor of natural history at the University of Pennsylvania, 1822–28. He was a founding member of the Academy of Natural Sciences in Philadelphia.
A post-apocalypse trip to the Svalbard Global Seed Vault to retrieve the seeds that will save humanity may seem like good fodder for a movie. But seed banks have important work to do right now.
Without its keystone, a Roman aqueduct collapses. Does the same travesty befall an ecosystem when a keystone species goes missing from the ecological equation?