Humans have become a geologic force by cooking the planet — using fire on a scale that is altering land, water, air and ...

Closely related to the history of sedimentary rocks are the age of the Earth as an astronomical body and the evolution of the planetary system. We shall see from the discussion of the following ...

The history of life on Earth is a tale of slow burns and sudden explosions, shaped by environmental upheavals and ...

The Earth and its moon are believed to have originated ... and it doesn’t account for the ages of some zircon minerals on its surface. A possible answer is that the moon underwent a “remelting ...

Second, it is possible to determine the numerical age for fossils or earth materials. Numerical ages estimate the date of a geological event and can sometimes reveal quite precisely when a fossil ...

BEFORE the time of the Scotch geologist, James Hut- ton, some 6,000 years was believed to indicate the age of the earth, and, indeed, of the entire universe. The advent of the uniformitarian ...

THE first part of Mr. Hobson's letter alone requires notice from me, as the latter part characterizes as absurd the views of those eminent geologists who have estimated the total thickness of the ...

Geochemist Clair Patterson sets the age of the Earth at 4.550 billion years, relying on ages of meteorites (including the Canyon Diablo meteorite, shown) that formed around the same time.