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Science | Physical Science | Nuclear Science

Nuclear science is the study of sub-atomic particles and their application in various disciplines. Here you can learn about nuclear power plants, atomic theory and radiation.

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How a Nuclear Meltdown Works

It's hard to get beyond Fukushima Daiichi when you think about nuclear meltdowns, but in fact the first one occurred decades ago, in 1969, in Switzerland's Lake Geneva region. How does such a cataclysmic incident occur?


How Radiation Works

How Radiation Works

Radiation is a loaded word. Believe it or not, not all radiation is bad for your health. Learn which radiation is deadly and which isn't deadly. See more »

How the Nuclear Arms Race Works

How the Nuclear Arms Race Works

The nuclear arms race was a frantic era in which several nations tested nuclear technology and stockpiled warheads. Read about the nuclear arms race. See more »

How easy is it to steal a nuclear bomb?

How easy is it to steal a nuclear bomb?

How easy is it to steal a nuclear bomb? Russia has reported hundreds of attempted smuggling incidents. Decide how easy is it to steal a nuclear bomb. See more »

How the Manhattan Project Worked

How the Manhattan Project Worked

The Manhattan Project was the code name used for the secret plan to develop nuclear weapons by the United States. Learn more about the Manhattan Project. See more »

Can people get poisoned by indirect exposure to polonium-210?

Can people get poisoned by indirect exposure to polonium-210?

British authorities have found traces of polonium-210 in at least five buildings and three British Airways jets since Alexander Litvinenko fell ill. See more »

What's a uranium centrifuge?

What's a uranium centrifuge?

Iran has announced its activation of a second set of uranium centrifuges. These machines are at the core of the uranium-enrichment process. Find out where the centrifuge fits into the equation. See more »

How Nuclear Fusion Reactors Work

How Nuclear Fusion Reactors Work

Fusion reactors will use abundant sources of fuel, will not leak radiation above normal background levels, and will produce less radioactive waste than current fission reactors. Learn about this promising power source. See more »

How Atom Smashers Work

How Atom Smashers Work

Atom smashers are used to help us discover what matter is made of. Learn about atom smashers and find out how an atom smasher works. See more »

How Nuclear Medicine Works

How Nuclear Medicine Works

Nuclear materials get used in many forms of nuclear medicine -- everything from PET scans to chemotherapy uses them! Learn how nuclear medicine works! See more »

How Nuclear Power Works

How Nuclear Power Works

Nuclear power provides electricity for a significant percentage of the population. Learn about nuclear fission and take a look inside a nuclear reactor. See more »