Hello all, I have been a fan of Pamela and Slacker Astronomy for about a year, and I
really enjoy Astronomy Cast!

I recently watched a program on the science channel about M Theory. One segment of the show dealt with the relative strength of gravity, and the theory that gravity may in fact be 'leaking' into our universe from a parallel dimension. Could you perhaps shed some light on the work being done on this subject?
Keep up the great work...