Why Einstein must be wrong: In search of the theory of gravity

Einstein's theory of gravity—general relativity—has been very successful for more than a century. However, it has theoretical shortcomings. This is not surprising: the theory predicts its own failure at spacetime singularities ...

First contact could turn out well for humanity

You've heard this story before. An advanced alien race comes to Earth. They offer peace and prosperity, but they hold a dark secret. One that could destroy humanity. That dark secret has varied over the years, from stealing ...

Avian flu hits bird paradise of Galapagos Islands

The Galapagos National Park said Tuesday that it had detected its first cases of avian flu on the remote islands, home to unique bird species that helped inspire the theory of evolution.

Joining the dots: Mathematicians solve hot coloring problem

Have you ever tried to do a brainteaser in which you have to connect the dots to make the outline of a house in one continuous stroke without going back over your lines? Or perhaps you've clicked on Facebook's friend recommendations ...

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