When December arrives, twinkling lights on every street announce the 'Christmas season.' Then, as Christmas gets closer, large and small Christmas trees appear in big shopping malls, on building ...

Thanks to a team of scientists, there's a new "tree of life" showing the ancestry of millions of different species dating back to the beginning of the planet. The team, led by Karen Cranston of Duke ...

For thousands of years, philosophers have pondered cardinality: knowing “how many.” Using a series of crude estimates, the ancient Greek mathematician Archimedes worked out the approximate number of ...