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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

And again, observe ye the days of summer how the sun is above the earth over against it. And you seek shade and shelter by reason of the heat of the sun, and the earth also burns with growing heat, and so you cannot tread on the earth, or on a rock by reason of its heat.

Book of Enoch, Chapter 4, translated by Robert Charles, 1917.

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Physical sciences, Earth sciences

Jeffrey Sachs: We need a sixth wave of sustainable and green technologies

We have reached planetary boundaries - human pressures on finite, earth systems are at a tipping point. However, the technology to address this near catastrophe is now within our reach, according to expert in sustainable development, Jeffrey Sachs.

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