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 ...

we know we can touch rocks that are 1.7 billion years old.

To determine when past geologic events occurred, geologists turn a field of science called geochronology. There are many different types of geochronologic techniques. The most commonly used include: 1 ...

Most people are busy with life on Earth. They rarely get the chance to think deeply about complex topics. And so they take the ideas of why we know certain things with relatively equal values — maybe ...

Lead-lead (Pb-Pb) dating is among the most widely used radiometric dating techniques to determine the age of really old things, such as the age of the Earth or the Solar System. However, recent ...

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.

A new IAEA Coordinated Research Project (CRP), entitled Development of Radiometric Methods and Modelling For Measurement of Sediment Transport in Coastal Systems and Rivers, will investigate how ...