Scientists have observed a brand-new and exotic atomic nucleus: aluminium-20. Unlike anything seen before, it decays through ...

Radioactivity is a fancy way to say "atomically unstable." This means that all radioactive atoms will eventually decay, at a time frame between minuscule fractions of a second and trillions of years.

Physicists from the Institute of Modern Physics (IMP) of the Chinese Academy of Sciences (CAS) and their collaborators have reported the first observation and spectroscopy of aluminium-20, a ...

The amount of time it takes for half of a radioactive tracer to decay is called its half-life. Tl-201 has a half-life of about 3 days, whereas Tc-99 has a half-life of about 6 hours.

The alchemist's dream is to make gold from common metals, but can this be done? The physics needed to explain how to change ...

Watch the Release Date Trailer for Misery, a session-based co-op survival game developed by Platypus Entertainment. Players ...

To give an idea of how radioactive this waste is when it comes out of the reactor, it gives off 10,000 rem/hour of radiation for the next 10 years. Just 500 rem/hour is enough to kill a human being.

Breathing in radon can be dangerous. Its radioactive particles decay in the lungs, releasing small bursts of radiation. Research shows this can damage lung tissue and cause lung cancer.

A picocurie is a measurement of the rate of radioactive decay of radon. That level, Mosaic claims, is “well below” the federal risk threshold of 3 in 10,000 people developing a fatal cancer.