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Maracaibo, Lake

(Encyclopedia) Maracaibo, Lake, largest lake of South America, c.5,100 sq mi (13,210 sq km), NW Venezuela, extending c.110 mi (180 km) inland. A strait, 34 mi (55 km) long, connects it with the Gulf…

Weather

Weather Get information on meteorology, climate, extreme temperatures and precipitation as well as weather disasters, including hurricanes, tornadoes, and lightning Weather History…

Weather: In the Clouds

In the CloudsWeatherPartly to Mostly CloudyMoisture and HumidityIn the CloudsTen Major Cloud TypesForecasting by Clouds Hopefully, all this talk about humidity hasn't put you in a fog—but that's the…

pocket mouse

(Encyclopedia) pocket mouse, small jumping rodent of W North America and as far south as N South America. More closely related to the squirrel than the true mouse, the pocket mouse gets its name from…

barley

(Encyclopedia) barley, annual cereal plant (Hordeum vulgare and sometimes other species) of the family Poaceae (grass family), cultivated by humans probably as early as any cereal. It was known to…

Petén

(Encyclopedia) PeténPeténpātānˈ [key], region, c.15,000 sq mi (38,850 sq km), N Guatemala. A humid expanse of dense, tropical hardwood forests interrupted by savannas and crisscrossed by ranges of…

leptospirosis

(Encyclopedia) leptospirosisleptospirosislĕpˌtəspīrōˈsĭs [key], febrile disease caused by bacteria of the genus Leptospirae. The disease may affect dogs, cattle, pigs, sheep, goats, and horses and is…

Guinea, archaic term for Africa's west coast

(Encyclopedia) GuineaGuineagĭnˈē [key], an archaic term for the west coast of Africa. In its widest sense it has been applied to the region from Angola to Senegal. Parts of the region bore names…

Weather: Upper-Air Observations

Upper-Air ObservationsWeatherMeasuring the AtmosphereThe Take on TemperatureIs the Pressure Getting to You?The Wind in the WillowsIt's Not the Heat, It's the HumidityMeasuring the RainPlacing the…

Weather Words

Air pressure: Air has weight. Air pressure is the weight of the air, or atmosphere, pushing down on Earth. The closer you are to sea level, the higher the air pressure because there’s that…