If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Indoor pollution is 10 times more toxic than outdoor pollution.
62
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The average home creates more pollution than does the average car.
33
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44