- Gunpowder Island Natural Area Preserve (dnr.wa.gov)
Located on a sand island in Willapa Bay, this 152 acre preserve protects nesting seabird colonies, including the rare snowy plover. It is a historic nest site for caspian terns. This large sandy accretion changes shape on a regular basis, and dune vegetation and seabirds re-colonize the shifting habitat. The island is also a haul-out location and pupping site for harbor seals.
- Leonhard Euler (Wikipedia)
Leonhard Euler (/ˈɔɪlər/ OY-lər, German: [ˈleːɔnhaʁt ˈʔɔʏlɐ], Swiss Standard German: [ˈleːɔnhart ˈɔʏlər]; 15 April 1707 – 18 September 1783) was a Swiss mathematician, physicist, astronomer, geographer, logician, and engineer who founded the studies of graph theory and topology and made pioneering and influential discoveries in many other branches of mathematics such as analytic number theory, complex analysis, and infinitesimal calculus. He introduced much of modern mathematical terminology and notation, including the notion of a mathematical function. He is also known for his work in mechanics, fluid dynamics, optics, astronomy, and music theory.