US Environmental Protection Agency
Epa: Causes of Climate Change
Earth's temperature depends on the balance between energy entering and leaving the planet's system . When incoming energy from the sun is absorbed by the Earth system, Earth warms. When the sun's energy is reflected back into space,...
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Dotdash: Treehugger: What Is Eco Friendly Technology?
What is eco-friendly technology? Also known as clean tech, green tech and environmental tech, eco-friendly technology can help preserve the environment through energy efficiency and reduction of harmful waste. Green tech innovators use...