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Cambridge, United Kingdom

University of Cambridge

Earth Sciences

Language: English Studies in English

Subject area: physical science, environment

University website: www.cam.ac.uk

Doctor of Philosophy (PhD)

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.

Wikipedia

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

They will not cause any harm
Or any ruin in all my holy mountain,
Because the earth will certainly be filled with the knowledge of Jehovah
As the waters cover the sea.

Book of Isaiah 11:9.

Wikiquote

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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Physical sciences, Earth sciences

Solar-powered water purification

Researchers are developing ways to use energy from sunlight for purifying water in remote areas with limited electricity supply.

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