sun

International Day for the Preservation of the Ozone Layer

September 16 is the International Day for the Preservation of the Ozone Layer. It was proclaimed by the UN in 1974, a […]

09/16/2013. Category: nature. Tags: ozone layer, sun

In a desert a mirage is caused when air near the ground is hotter than air higher up. As light from the […]

07/31/2010. Category: nature. Tags: mirage, sun

It is the fire of life. It can be kind but it can get angry. But it never throws its weight around. […]

04/23/2010. Category: science. Tags: astronomy, planets, stars, sun

Earth is not exactly round; it is slightly pear-shaped. The North Pole radius is 1.73 inch (44mm) longer than the South Pole […]

06/22/2009. Category: science. Tags: Earth, moon, sun