turn off lights

According to Scienceabc, light is made up of millions of extremely small particles (these particles are not visible to the naked eye known as photons).

A farm owner brought cattle into the city to sell. He came to the post office, intending to send the telegram to his wife.

Famous buildings in China, Indonesia, Malaysia and many other countries turn off the lights to enjoy Earth Hour 2010.

Planet protection project - Earth Hour comes from the desire to call people together to fight climate change through the simplest actions.

The United Nations headquarters in New York and offices around the world will participate in the

If there are stimuli such as a TV or a desk lamp on while sleeping, these sleeps can easily make people depressed.