Monday, July 21, 2008

In the office

31. Recycle office and computer paper, cardboard, etc.
32. Use scrap paper for informal notes to yourself and others.
33. Print or copy on both sides of the paper.
34. Use smaller paper for smaller memos.
35. Re-use manila envelopes and file folders.
36. Use dishes, glassware and coffee cups instead of disposible dishes and cups.

In the car

22. Keep your car tuned up and your oil changed.
23. Carpool, if possible.
24. Use public transit whenever possible.
25. On weekends, ride your bike or walk instead.
26. Buy a car that is more fuel-efficient and produces lower emissions.
27. Recycle your engine oil.
28. Keep your tires properly inflated.
29. Keep your wheels properly aligned.
30. Save trash and dispose of it at a rest stop.

In the yard

14. Start a compost pile.
15. Put up birdfeeders, birdhouses, and birdbaths.
16. Pull weeds instead of using herbicides.
17. Use only organic fertilizers.
18. Compost your leaves and yard debris, or take them to a yard debris recycler.
19. Take extra plastic and rubber pots back to the nursery.
20. Plant short, dense shrubs close to your home's foundation to help insulate your home against cold.
21. Use mulch to conserve water in your garden.

Plz help save the earth!!!?

Can you plz help save the earth the earth needs our help can you plz write that you will save the earth heres some ways you can:
In your home

1. Recycle everything: newspapers, bottles and cans, aluminum foil, etc.
2. Don't use electrical appliances when you can easily do by hand, such as opening cans.
3. Use cold water in the washer whenever possible.
4. Re-use brown paper bags to line your trash can instead of plastic bags. Re-use bread bags and produce bags.
5. Store food in re-usable containers.
6. Save wire hangers and return them to the dry cleaners.
7. Donate used items to a charitable organization or thrift shop.
8. Don't leave water running needlessly.
9. Turn your heat down, and wear a sweater.
10. Turn off the lights, TV, or other electrical appliances when you are out of a room.
11. Flush the toilet less often.
12. Turn down the heat and turn off the water heater before you leave for vacation.
13. Recycle your Christmas Tree. Learn how
Greenhouse effect

The ability of a planetary atmosphere to inhibit heat loss from the planet's surface, thereby enhancing the surface warming that is produced by the absorption of solar radiation. For the greenhouse effect to work efficiently, the planet's atmosphere must be relatively transparent to sunlight at visible wavelengths so that significant amounts of solar radiation can penetrate to the ground. Also, the atmosphere must be opaque at thermal wavelengths to prevent thermal radiation emitted by the ground from escaping directly to space. The principle is similar to a thermal blanket, which also limits heat loss by conduction and convection. In recent decades the term has also become associated with the issues of global warming and climate change induced by human activity. See also Atmosphere; Solar radiation.

Basic understanding of the greenhouse effect dates back to the 1820s, when the French mathematician and physicist Joseph Fourier performed experiments on atmospheric heat flow and pondered the question of how the Earth stays warm enough for plant and animal life to thrive; and to the 1860s, when the Irish physicist John Tyndall demonstrated by means of quantitative spectroscopy that common atmospheric trace gases, such as water vapor, ozone, and carbon dioxide, are strong absorbers and emitters of thermal radiant energy but are transparent to visible sunlight. It was clear to Tyndall that water vapor was the strongest absorber of thermal radiation and, therefore, the most influential atmospheric gas controlling the Earth's surface temperature. The principal components of air, nitrogen and oxygen, were found to be radiatively inactive, serving instead as the atmospheric framework where water vapor and carbon dioxide can exert their influence.

The impact of water vapor behavior was noted by the American geologist Thomas Chamberlin who, in 1905, described the greenhouse contribution by water vapor as a positive feedback mechanism. Surface heating due to another agent, such as carbon dioxide or solar radiation, raises the surface temperature and evaporates more water vapor which, in turn, produces additional heating and further evaporation. When the heat source is taken away, excess water vapor precipitates from the atmosphere, reducing its contribution to the greenhouse effect to produce further cooling. This feedback interaction converges and, in the process, achieves a significantly larger temperature change than would be the case if the amount of atmospheric water vapor had remained constant. The net result is that carbon dioxide becomes the controlling factor of long-term change in the terrestrial greenhouse effect, but the resulting change in temperature is magnified by the positive feedback action of water vapor.

Besides water vapor, many other feedback mechanisms operate in the Earth's climate system and impact the sensitivity of the climate response to an applied radiative forcing. Determining the relative strengths of feedback interactions between clouds, aerosols, snow, ice, and vegetation, including the effects of energy exchange between the atmosphere and ocean, is an actively pursued research topic in current climate modeling. See also Climate modification.