sábado, 4 de abril de 2009

Too much sun is dangerous...

Our sun produces a lot of ultraviolet radiation. Too much radiation is danngerous; but between fifteen and fifty kilometres above the earth there is a layer of a gas called ozone. This 0ozone layer protects the earth from the sun's dangerous radiation. We products many gases which go high into air and damage the ozone layer.

What do you think. "the tecnology to contribute to Global Warming"?

sábado, 28 de março de 2009

This video show the changes in the world caused by The Man. Think About it.

Ice Caps

The earth has two ice caps, one in the north, in the Artic and one in the south, in Antarcica. Each ice cap contains many bilions of tonnes water. If the weather is too warm, those ice caps will melt. Scientists think the earth is getting wamer because of all the green house gases. Many people think that these changes to our weather will be the biggest problem problem caused by pollution in the next hundred years.

Why "the Ice Caps" are melting today? What do you think to contribute it?