Study suggests there are only two tiger subspecies

(Phys.org)—A team of researchers with affiliations to institutions in Germany, Denmark and the U.K. has concluded after extensive research, that there are really only two subspecies of tigers, as opposed to the nine that ...

New theory on African exit

Modern humans left Africa twice as early as previously thought, spreading in a number of climate-driven waves, new research suggests.

Full solar eclipse turns day to night in Asia

(AP) -- From the Ganges River in India to remote islands of the Pacific, the sun rose Wednesday only to vanish again, allowing the stars to twinkle into view in the longest total solar eclipse this century will see - a celestial ...

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