Some minerals in rocks and organic matter (e.g., wood, bones, and shells) can contain radioactive isotopes. The abundances of parent and daughter isotopes in a sample can be measured and used to ...

That’s the situation that faced authorities in Australia, as they scoured over a thousand kilometers of desert highway for a tiny missing radioactive source with the potential to cause serious harm.

Authorities cautioned that while legal “radioactive rocks” are available for purchase online, students should not bring them into school without talking to their teachers. Owasso is about a 15 ...

Radionuclides of natural origin contained in or released from process materials may pose a risk to workers, public or the environment. These radioactive elements in minerals and ores originally found ...

An international team of researchers, including members from the Institut de physique du globe de Paris (IPGP, Université Paris Cité, CNRS) and the Natural History Museum of Vienna (NHMW) ...

Scientists discovered that rocks could be timepieces -- literally ... Certain isotopes are unstable and undergo a process of radioactive decay, slowly and steadily transforming, molecule by ...

to highly radioactive materials to radioactive materials for long periods of time or on a regular basis Precautions are taken to reduce the risk of harm when using radioactive sources. These ...

The Federal Company for Radioactive Waste Disposal and the Federal Office for the Safety of Nuclear Waste Management have ...