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Save Birds, save planet

10:54:00 PM Posted by Mr. Kinar No comments
Global warming has posed serious threat to the natural biodiversity around us. The phenomenon has pushed many animal and bird species to the verge of extinction. The warning bell goes that in another few decades, one quarter to one third of many bird species will be wiped out from the face of planet earth. Particularly, migratory avifauna is affected the most by global warming owing to their changing habitats during migration.Long distance migrants are more vulnerable to global warming than others. For instance, as the winter temperatures increased at Lake Constance in Central Europe between 1980-1992, the number of long distance visiting birds diminished drastically. The same story goes in several other parts of the world.

Some visible impact of global warming on birds:

* About a dozen species in Great Britain have shifted their base at an average of 12 miles northward in last two decades.
* Several North American warbler species have shifted more than 65 miles towards north. The Golden-winged Warblers have moved nearly 100 miles north in the last twenty years

Report sets high alert:

In the US for instance, transition in global temperature along with other environmental factors have already made the future of hundreds of species of migratory birds very much uncertain. The finding has been revealed by a new report of the Interior Department of the country. The latest report from the department has concluded that nearly a third of the country’s 800 avifauna species are endangered. However, climate change is not the sole reason that has led to such a perilous situation. Destruction of bird habitats and loss of wetlands owing to high level of human encroachment, invasive species and excessive use of pesticides are among other factors that are responsible for this.

The Interior Department report has pointed out that the oceanic and shore birds are the poorest victims of this environmental impact for they are most vulnerable to rapidly changing marine ecosystem and rising sea level.

Birds can not adapt to global warming?

Earlier, the species and ecosystems could adapt with changing global temperatures but now they can not. Reason? The current pace of climate change is far too fast for the birds to adjust and adapt. The fact that temperature would rise ten times faster than the pace it increased since the last Ice Age. Death knell for birds. Besides, those species that possess the ability to adapt are now limited by urban and industrial development, expansion of agricultural lands and habitat destruction caused b y human encroachment.
Must save birds:

Several federal and state wildlife agencies, universities and conservation groups in the US are trying their best to alter the current course of events. For the experts feel that birds are excellent indicators of the state of the environment. Birds also have great economic and aesthetic values. One third of human food comes from plants that are pollinated by birds. They also help in dispersion of seeds and also controlling harmful rodents and insects, which would otherwise destroy many crops. They help in maintaining ecological balance as well. Thus, we must be very careful before any irreversible disaster materialises.

Nuclear effects on climate?

10:36:00 PM Posted by Mr. Kinar No comments

Massive absorption of warming sunlight by a global smoke layer would cause Ice Age temperatures on Earth. NASA computer models predict 40% of the smoke would stay in the stratosphere for 10 years. There the smoke would also destroy much of the protective ozone layer and allow dangerous amounts of UV light to reach the Earth's surface.

Half of 1% of the explosive power of the deployed nuclear arsenal can create nuclear darkness. 100 Hiroshima-size weapons exploded in the large cities of India and Pakistan would put 5 million tons of smoke in the stratosphere and drop average global temperatures to Little Ice Age levels. Shortened growing seasons could cause up to 1 billion people to starve to death.

A large nuclear war could put 150 million tons of smoke in the stratosphere and make global temperatures colder than they were 18,000 years ago during the coldest part of the last Ice Age. Killing frosts would occur every day for 1-3 years in the large agricultural regions of the Northern Hemisphere. Average global precipitation would be reduced by 45%. Earth’s ozone layer would be decimated. Growing seasons would be eliminated.

A large nuclear war would utterly devastate the environment and cause most people to starve to death. Already stressed ecosystems would collapse. Deadly climate change, radioactive fallout and toxic pollution would cause a mass extinction event, eliminating humans and most complex forms of life on Earth.

The U.S. and Russia keep hundreds of missiles armed with thousands of nuclear warheads on high-alert, 24 hours a day.

They can be launched with only a few minutes warning and reach their targets in less than 30 minutes. We must end this madness.