- Carbon (from Latin carbo ‘coal’) is a chemical element; it has symbol C and atomic number 6. It is nonmetallic and tetravalent—meaning that its atoms are able to form up to four covalent bonds due to its valence shell exhibiting 4 electrons. It belongs to group 14 of the periodic table. Carbon makes up about 0.025 percent of Earth’s crust. Three isotopes occur naturally, 12C and 13C being stable, while 14C is a radionuclide, decaying with a half-life of 5,700 years. Carbon is one of the few elements known since antiquity.
- Phinney Ridge, Seattle (Wikipedia)
Phinney Ridge is a neighborhood in north central Seattle, Washington, United States. It is named after the ridge which runs north and south, separating Ballard from Green Lake, from approximately N. 45th to N. 80th Street. The ridge, in turn, is named after Guy C. Phinney, lumber mill owner and real estate developer, whose estate was bought by the city and turned into Woodland Park in 1899. Phinney’s estate had included a private menagerie, and the western half of the park became what is now the Woodland Park Zoo.