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University of Cambridge

Earth Sciences

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Earth Sciences at University of Cambridge »
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⇑Earth Sciences at University of Cambridge

Language: English Studies in English

Subject area: physical science, environment

University website: www.cam.ac.uk

Doctor of Philosophy (PhD)

⇑Definitions and quotes

Earth

Earth is the third planet from the Sun and the only object in the Universe known to harbor life. According to radiometric dating and other sources of evidence, Earth formed over 4.5 billion years ago. Earth's gravity interacts with other objects in space, especially the Sun and the Moon, Earth's only natural satellite. Earth revolves around the Sun in 365.26 days, a period known as an Earth year. During this time, Earth rotates about its axis about 366.26 times.

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Earth

In this broad earth of ours,
Amid the measureless grossness and the slag,
Enclosed and safe within its central heart,
Nestles the seed perfection.

Walt Whitman, Song of the Universal, in Leaves of Grass

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Earth

The surface of the earth is the shore of the cosmic ocean. On this shore we've learned most of what we know. Recently we've waded a little way out, maybe ankle-deep, and the water seems inviting.

Carl Sagan,Cosmos: A Personal Voyage (1990 Update) The Shores of the Cosmic Ocean [Episode 1], 03 min 55 sec

Wikiquote

Earth

Earth below us
drifting, falling.
Floating weightless
calling, calling home...

Peter Schilling, song Major Tom (Coming Home) (1983).

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Making bioenergy a better alternative to fossil fuel combustion

Bioenergy produced from refined biomass can reduce emissions that contribute to climate change while providing energy security. Cooperative funding of the most promising projects should lower costs and increase sustainability.

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