Radioisotope dating video

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Measuring the uranium-to-lead ratios in the oldest rocks on Earth gave scientists an estimated age of the planet of 4.6 billion years.Segment from A Science Odyssey: "Origins."Geologists have calculated the age of Earth at 4.6 billion years.A young earth is considered to be typically just 6,000 years old since this fits the creation account and some dating deductions from Genesis.The crucial point here is: if YE theory can be established scientifically, then macroevolutionary theory falls!

A breakthrough came with the discovery of radioactivity at the beginning of the 1900s.

This is the crucial point: it is claimed by some that an old earth supports evolutionary theory and by implication removes the need for biblical creation.

Some claim Genesis in particular, and the Bible in general looks mythical from this standpoint.

But for humans whose life span rarely reaches more than 100 years, how can we be so sure of that ancient date? Even the Greeks and Romans realized that layers of sediment in rock signified old age.

But it wasn't until the late 1700s -- when Scottish geologist James Hutton, who observed sediments building up on the landscape, set out to show that rocks were time clocks -- that serious scientific interest in geological age began.

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