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Global Warming: Melting kingdom of the Polar Bear
Through the long and dark Arctic winter, the mother Polar Bear sat quietly in her den. She had given birth to her cubs, and was waiting for them to grow strong enough to follow her out to the ice pack. The ice pack is her refrigerator, the place where she gets her food. It’s quite literally a floating, rotating gyre or “cap” of ice that covers the Earth’s northern pole. Along its edges of cracked and broken ice swims the Polar Bear’s food: ringed seals, bearded seals, harp and hooded seals and, occasionally, carcasses of beached beluga whales, walruses, narwhals, and bowhead whales....
Why does Cola Fizz?
Switch on the television and you are bound to see some cola advertisements. Aamir Khan, a Bollywood hero, pops open a cola and the bubbly drink fizzes to the top. Have you ever wondered what causes the countless teeny bubbles in all these soft drinks? Soft drinks are carbonated, i.e. carbon dioxide gas is dissolved in the liquid. This gas gives the drink its sparkle and tangy taste, and prevents it from spoiling (the gas reduces bacterial growth)....
Global Warming
Konish Biswas, a student of Standard VIII puts forth his views on a problem that is affecting the whole planet. Nowadays as you know, there is a lot of pollution in the atmosphere. The level of carbon dioxide and other such gases (known as greenhouse gases) is rising. These gases trap the heat and do not let it escape from the atmosphere. Global Warming [Illustration by Sudheer Nath] When the presence of these gases goes beyond a level, the temperature rises....
'Ibuki' : Japan's 'Green' Monitor Orbits the Earth
Where: Tokyo, Japan January 23, 2009 : A space centre in Tanegashima, a remote island about 970 kilometers southwest of Tokyo, today launched the first satellite designed to monitor carbon dioxide emissions. It is named ‘Ibuki’, which means ‘breath’. The satellite has sensors which can measure light reflected from earth, and gauge the density of carbon dioxide and methane. These two gases are the biggest contributors to global warming, Ibuki will circle the globe every 100 minutes, and will monitor the levels of carbon dioxide and methane from 56,000 locations for the next five years....
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