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Energy and the Earth

Energy is the power that we use for transportation, for heat and light in our homes and other places, and for the manufacture of all kinds of products. It has many other uses, too. The development…

DK Science: Recycling

LANDFILL SITESROLLING STEELSHEET STEELRECYCLING PAPERRECYCLED PLASTICBIODEGRADABLEFIND OUT MOREMany things we normally throw away can be recycled (used again), including paper, glass, metals,…

Weather: So Why Does It Rain?

So Why Does It Rain?WeatherBring on the RainDroplet to Drop … How Rain HappensTypes of PrecipitationFooling the CloudsSo Why Does It Rain? Wait a minute! After all this, we still don't know why it…

hydrology

(Encyclopedia) hydrology, study of water and its properties, including its distribution and movement in and through the land areas of the earth. The hydrologic cycle consists of the passage of water…

America's Ten Most Endangered Rivers, 2008

Each year the organization American Rivers analyzes the condition of the nation's rivers to determine which are the most “endangered.” Threats to these rivers include dams and channelizations that…

America's Ten Most Endangered Rivers, 2010

Each year the organization American Rivers analyzes the condition of the nation's rivers to determine which are the most “endangered.” Threats to these rivers include dams and channelizations that…

America's Ten Most Endangered Rivers, 2011

Each year the organization American Rivers analyzes the condition of the nation's rivers to determine which are the most “endangered.” Threats to these rivers include dams and channelizations that…

America's Ten Most Endangered Rivers, 2012

Each year the organization American Rivers analyzes the condition of the nation's rivers to determine which are the most “endangered.” Threats to these rivers include dams and channelizations that…

aquaculture

(Encyclopedia) aquaculture, the raising and harvesting of fresh- and saltwater plants and animals. The most economically important form of aquaculture is fish farming, an industry that accounts for…

Carson Sink

(Encyclopedia) Carson Sink, swampy area, c.100 sq mi (260 sq km), W Nev.; a remnant of ancient Lake Lahontan. Fallon National Wildlife Refuge is located there. The Carson River (c.125 mi/200 km long…