Sound travels about 4 times faster in water than in air.
408
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
24
Nylon is made from coal and petroleum.
42
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9