Central Bureau of Investigation

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"Most human beings have an almost infinite capacity for taking things for granted."

Physics

What will spacecraft be like in the future?»
Space shuttles will be replaced quite soon with space planes. America is developing a space ...
Who is building a new space station?»
America is leading a group of countries to build an international space station (ISS). The ...
What bounced around on Mars?»
The Mars Pathfinder probe dropped on to Mars inside a bundle of balloons. The balloons ...
Which voyagers visited all the planets?»
Humans can’t travel to other planets yet. A trip to Mars would need much bigger ...
Is there a telescope in space?»
Astronomers on Earth have their view spoilt by our cloudy, dirty atmosphere, which makes ...

Chemistry

What are acids and bases?»
ACIDS AND BASES Some substances and chemicals are very reactive. This means they ...
What are crystals and what are Solutions?»
CRYSTALS In many solid substances, the atoms or molecules are fixed in place but ...
What is oxygen and hydrogen?»
OXYGEN We cannot see, smell or taste oxygen. Yet it forms one-fifth of air and is ...
How would you help me to understand what molecule is?»
MOLECULES Atoms make up all the objects and substances in our world. But they ...
Why some metals are precious?»
PRECIOUS METALS Certain types of metals are precious or valuable. This may be ...

Biology

What is the function of stomach?»
Seconds after swallowing, food enters the stomach, the J-shaped, stretchy bag that ...
What is the function of abdomen and pelvis?»
The abdomen contains hardworking organs from many of the body’s systems. Most of them ...
What is the function of hand?»
Because humans walk upright on two feet, it leaves our hands free to take on other ...
What is the function of skeletal muscle?»
Body movement is controlled by skeletal muscle. About 650 skeletal muscles move the ...
How to maintain muscle?»
Muscles must be kept strong and healthy, so the body can move easily and function ...