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Pickens, Andrew

(Encyclopedia)Pickens, Andrew, 1739–1817, American Revolutionary soldier, b. near Paxtang, Pa. He moved (1752) to South Carolina and took part (1761) in frontier warfare against the Cherokee. During the American ...

Orizaba, city, Mexico

(Encyclopedia)Orizaba ōrēsäˈbä [key], city (1990 pop. 114,216), Veracruz state, E central Mexico. It is the commercial center of a prosperous bean and sugar growing region. The development of water power has s...

Mojave Desert

(Encyclopedia)Mojave or Mohave Desert, c.15,000 sq mi (38,850 sq km), region of low, barren mountains and flat valleys, 2,000 to 5,000 ft (610–1,524 m) high, S Calif.; part of the Great Basin of the United States...

Arizona

(Encyclopedia)CE5 Arizona ârˌəzōˈnə [key], state in the SW United States. It is bordered by Utah (N), New Mexico (E), Mexico (S), and, largely across the Colorado River, Nevada and California (W); it touch...

Crutzen, Paul Jozef

(Encyclopedia)Crutzen, Paul Jozef, 1933–2021, Dutch atmospheric chemist, grad. Univ. of Stockholm (Ph.D. 1968, D.Sc. 1973). After working (1977–80) for the Nation...

Cornell, Eric Allin

(Encyclopedia)Cornell, Eric Allin, 1961–, American physicist, b. Palo Alto, Calif., Ph.D. Massachusetts Institute of Technology, 1990. Since 1990, he has been a researcher at the Joint Institute for Laboratory As...

columbine, in botany

(Encyclopedia)columbine kŏlˈəmbīn [key], any plant of the genus Aquilegia, temperate-zone perennials of the family Ranunculaceae (buttercup family), popular both as wildflowers and as garden flowers. Columbines...

Great Sand Dunes National Park and Preserve

(Encyclopedia)Great Sand Dunes National Park and Preserve, 132.4 sq mi (343 sq km), in the San Luis Valley of S Colorado; est. as a national monument 1932, designated a national park 2004. Lying in an area of high ...

monazite

(Encyclopedia)monazite mŏnˈəzīt [key], yellow to reddish-brown natural phosphate of the rare earths, mainly the cerium and lanthanum metals, usually with some thorium. Yttrium, calcium, iron, and silica are fre...

Mangas Coloradas

(Encyclopedia)Mangas Coloradas mängˈgäs kōlōräˈᵺäs [key] [Span.,=red sleeves], c.1797–1863, chief of the Mimbrenos group of Apache of SW New Mexico. Many of the Mimbrenos were massacred by trappers in 1...