Showing posts with label news. Show all posts
Showing posts with label news. Show all posts

Thursday, May 2, 2013

Water bottle as a 50 Watt Light Bulb

Who says you can’t bottle (and distribute) genius? Developed in Brazil to address under-illuminated slums, this simple design idea has been adopted by MIT students and expanded to other developing areas where many low-income homes lack access to either daylight or electricity.

The physics of the concept are straightforward: the bottles are placed in roofs – half outside, half inside – and their lower portions refract light like 60-Watt light bulb but without the need for a power source. A few drops of bleach serve to keep the water clear, clean and germ-free for years to come.

In total, one of these do-it-yourself lights takes maybe an hour to install, cutting an appropriate hole, inserting a bleached-water-filled bottle, and resealing around the resulting gap. Even where clean water is rare, a little can generally be spared for a half-decade of lighting.

We take for granted our electric lights, windows and skylights to access the sun’s glow, but for those living in close-together shacks with corrugated-metal roofs, a stray ray is welcome, and something that can spread light to the darkest interior corners can be a dream come true.

Here is a short clip on how to make it, Use a 2-Liter Bottle as a 50 Watt Light Bulb::

Stray dogs using subway to travel accross moscow

Animals in the wild have to continually contend with the expansion of human civilization. Certain wild animals have learned to coexist and even thrive in urban settings, pigeons and raccoons being obvious examples.

Well, subway goers in Moscow are becoming familiar with stray dogs. These dogs have become accustomed to using the subway system as a means to travel across Moscow, even managing to catch a nap along the way. The dogs hop on in the morning and travel to the city center where they spend the day begging for scraps. At the end of the day they get back on the subway and travel to the suburbs where they sleep in relative safety. 

The dogs have become experts at judging the length of time they need to stay on the train, and seem to work together to ensure that they exit the subway at the right stop.

Scientists believe this phenomenon began after the Soviet Union collapsed in the 1990s, and Russia’s new capitalists moved industrial complexes from the city center to the suburbs.

Dr Andrei Poiarkov, of the Moscow Ecology and Evolution Institute, said: “These complexes were used by homeless dogs as shelters, so the dogs had to move together with their houses. Because the best scavenging for food is in the city center, the dogs had to learn how to travel on the subway – to get to the center in the morning, then back home in the evening, just like people.”

Sunday, April 7, 2013

North Korea dogs attack South Korean effigies

The North Korean government has released footage of soldiers training dogs to attack effigies of South Korean Defence Minister Kim Kwan-jin, whom is the north's "number one enemy".

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