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Radiometric Dating:

By measuring the ratio of lead to uranium in a rock sample, its age can be determined. Using this technique, called radiometric dating, scientists are able to "see" back in time. read more

Dating Rocks and Fossils Using Geologic Methods

This method is known as radiometric dating. Some commonly used dating methods are summarized in Table 1. The rate of decay for many radioactive isotopes has been measured and does not change over ... read more

A beginner's guide to dating rocks

Geologists study the rock record to understand how our world came to be and to try to determine what geologic events might occur in the future. The field of geochronology ... read more

Radiometric dating finds Earth is 2.2 billion years old

In 1902 Ernest Rutherford and Frederick Soddy discovered that radioactive elements, such as uranium and thorium, broke down into other elements in a predictable sequence or series. This amazing ... read more

How a Theory about Climate Change Led to The Feminine Mystique

Almost a year before the 1963 publication of The Feminine Mystique —the zeitgeist-shattering book that would launch second-wave feminism and change the life of millions of women—author Betty Friedan ... read more

Religious Beliefs That Science Has Debunked (But People Still Cling To)

This evidence comes from radiometric dating, studies of geological formations, and fossil records. You may also like: 18 Personality Traits Of An Unhappily Married Man Some interpretations of ... read more

Meteorites: Why study them? What can they teach us about finding life beyond Earth?

For example, while ALH84001 is estimated to be 4.5 billion years old, which is when Mars is hypothesized to have possessed liquid water on its surface, radiometric dating techniques revealed that ... read more

Radiometric Dating

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Dating Rocks and Fossils Using Geologic Methods

This method is known as radiometric dating. Some commonly used dating methods are summarized in Table 1. The rate of decay for many radioactive isotopes has been measured and does not change over ... read more

Radiometric dating finds Earth is 2.2 billion years old

In 1902 Ernest Rutherford and Frederick Soddy discovered that radioactive elements, such as uranium and thorium, broke down into other elements in a predictable sequence or series. This amazing fact ... read more

Principles of Radiometric Dating

The time-dependent decay of naturally occurring radioactive isotopes or in-growth of their radioactive or stable daughter products form the basis of radiometric dating of several natural processes. read more