Is There Life on Earth?

地球上有生命吗？

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For example, scientists have found evidence that there could be liquid water-which is necessary for life on earth-at many places on the Mars.

他说，比如，科学家曾经在火星上的很多地方发现曾有液态水存在的证据，而这是生物生存的必要条件。

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IT has a bright future because technology is pervading every aspect of culture, commerce, and life, and there are still many places on earth where technology will be spreading in the coming decades.

IT依然前景光明，因为技术遍及文化、商业和生活的方方面面，未来数十年，地球上还有许多地方在等待技术的传播。

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If there is intelligent life out there, maybe it is looking for signs of life on Earth from such transits.

CNN: A transit of Venus, an age of wondrous science

Web sites abound for alien-seekers: people trying to prove there is life on other planets or that entities from other planets have visited Earth.

CNN: The Internet: the final frontier for space watchers

If there is life on such a planet, microscopic forms of it will probably live deep inside rocks, as they do on earth.

ECONOMIST: Panspermia: Interplanetary migration | The