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Crimean vote, search for Flight 370 changes direction, reappearance of infectious diseases

Will we ever get dinosaur DNA?

The growth of the region from the 18th century on..

An intimate and heartbreaking glimpse into a marriage.

Has the political gridlock in Washington become the new normal?

A devoted caretaker, her chronically ill husband, and the power of undying love.

The Southwest is in a megadrought, but Native Americans have survived them before.

U.S. to support Syrian rebels, Edward Snowden leaks, and Congress on immigration reform

The heat index, also known as the apparent temperature, is what the temperature feels like to the human body when relative humidity is combined with the air temperature. There is direct relationship between the air temperature and relative humidity and the heat index, meaning as the air temperature and relative humidity increase (decrease), the heat index increases (decreases).