Despite seeming like a relatively stable place, the Earth's surface has changed dramatically over the past 4.6 billion years. Mountains have been built and eroded, continents and oceans have moved ...

Geologists have calculated the age of Earth at 4.6 billion years. But for humans whose life span rarely reaches more than 100 years, how can we be so sure of that ancient date? It turns out the ...

Okay so I understand at a very basic level how radiometric dating works, but I have a question. How do scientists know the half-life of isotopes, when some of them are measured in millions or billions ...

Rice University professor Bidong Zhang has received a grant to develop next-generation lunar radiometric dating techniques that will acquire more accurate ages for lunar samples. This project is ...

Potassium-argon dating of igneous and metamorphic rocks with applications to the basin ranges of Arizona and Sonora / P.E. Damon -- A comparison of the isotopic mineral age variations and petrologic ...

The IAEA is inviting research institutions to join its new five-year coordinated research project (CRP) on developing radiometric methods for measuring hydrodynamics of constructed wetlands.