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Scientists use a technique called radiometric dating to estimate the ages of rocks, fossils, and the earth.

Some isotopes of certain elements are unstable; they can spontaneously change into another kind of atom in a process called “radioactive decay.” Since this process presently happens at a known measured rate, scientists attempt to use it like a “clock” to tell how long ago a rock or fossil formed.So, a carbon atom might have six neutrons, or seven, or possibly eight—but it would always have six protons.An “isotope” is any of several different forms of an element, each having different numbers of neutrons.They can absorb ions in batteries and supercapacitors, store gases and desalinate water.How well they cope with the task at hand depends largely on the structural features ...

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This has caused many in the church to reevaluate the biblical creation account, specifically the meaning of the word “day” in Genesis 1.

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