There is no gravity...

In what may indeed be only of the most important Physics papers of several decades, Erik Verlinde, 48, a respected mathematician and string theorist at the Unversity of Amsterdam, has pretty much supplied an entirely new phyisical view of that most mysterious of subjects: gravity. In Verlinde's view, gravity is not one of the four fundamental forces in the universe, and in fact, "doesn't really exist." The statement might have been made to be rather a provocation, but in Verlinde's view, as he argued in a recent paper, titled “On the Origin of Gravity and the Laws of Newton,” gravity is a consequence of the venerable laws of thermodynamics, which describe the behavior of heat and gases.

There is a public explication of this, in the New York Times article at:
http://www.nytimes.com/2010/07/13/science/13gravity.html?ref=science

Dr. Verlinde's paper is downloadable at:
http://arxiv.org/abs/1001.0785

Note: according to the Times article, very few scientists claim to fully understand Verlinde's paper. He himself says to pay attention more to the words and the concepts, rather than the maths.

In the coming decades, much of real importance or interest may come from this...