Everyone is familiar with muscle pain after heavy physical activity, especially if a person has not exercised for a long time before. This pain occurs 4-6 hours after exercise, and on the second day it increases. Here’s why it happens.

The coldest areas on Earth are the poles. The Earth’s poles are cold because the sun’s rays do not strike the Earth obliquely.

Dogs, people, and fish breathe for the same reason. Everyone needs oxygen. Oxygen is a gas that bodies used to produce energy.

Birds living in the wild are extremely cautious and attentive creatures. Probably, because of this, there is an opinion that wild birds can give up their chicks if a man touches them.

Great scientific discoveries and technological achievements of the turn of XX and XXI centuries - the success of computer informatics and progress in the decoding of the human genome - were a breakthrough in the scientific

From the moment the baby Polar Bear born in the world. The white bear always has an interesting story to be shared with human. Here’s the list of 10 most interesting facts about Polar bear.

Giraffe is the tallest mammals in the land of Africa and that is not only the interesting fact of this animal. Here’s 10 interesting facts about Giraffe.

Rain is the drops of water that fall out of the clouds. This natural phenomenon is quite common in autumn and spring, and summer and winter can not do without rain

Wind is a natural phenomenon as air moving on our land. Each of us can feel the wind blowing on our bodies, and can watch the wind move the branches of the trees.