A new study co-led by the Smithsonian and the University of Arizona offers the most detailed glimpse yet of how Earth's surface temperature has changed over the past 485 million years. In a paper ...

In a hospital or at home, temperatures are usually taken using an oral or forehead thermometer, but these do not always ...

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Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...

A team of researchers says oxygen isotopes found in rock types contain the oldest geochemical record of the Earth. A collective understanding of five different data sets show that, all the way back to ...

On a warm summer night, when everything else grows quiet, the air begins to buzz with a steady rhythm. Crickets chirp from the bushes, from tree branches, from somewhere you can’t quite see. It feels ...