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NATURE Earth is the only planet presently known to support life, and its natural features are the subject of many fields of scientific research. Within the solar system, it is third nearest to the sun; it is the largest terrestrial planet and the fifth largest overall. Its most prominent climatic features are its two large polar regions, two relatively narrow temperate zones, and a wide equatorial tropical to subtropical region.[6] Precipitation varies widely with location, from several metres of water per year to less than a millimetre . 71 percent of the Earth's surface is covered by salt-water oceans. The remainder consists of continents and islands, with most of the inhabited land in the Northern Hemisphere.
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The biggest challenge that mankind is facing in this century is "global warming" and there is a "global warning" given by scientist to save the earth.It has become a big cry from every corner of the world "How to save the earth from global warming", every nation, every forums, every where and in every thing they discuss about .This
global warming and how to save our earth from this biggest threat. Scientists had laid down the root cause for this situation as the increase in the amount of carbon DI oxide let out on the atmosphere by our industries and automobiles. If this is going to continue we may loose our land to oceans and the indifferent climate conditions may also lead to new unknown diseases, which may challenge the medical world. Now it self we have started to feel the impact of this global warming. It is not an issue with the scientists alone, every individual can join hands in this global mission on "How to save the earth from global warming", and i have listed something below. Unless we understand the effects of global warming it is really going to be tough to save our mother earth. Challenges
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MORE CHALLENGES