Dense gravity DOES distort spacetime: NASA Goddard astronomers, using instruments on the European Space Agency's XMM-Newton X-ray observatory and the Japanese/NASA Suzaku X-ray observatory (and peeking at three neutron stars), have detected a distorted iron spectral line. The spectral line from hot iron atoms whirling in a disk around the dense star systems at 40 percent the speed of light were shifting to longer wavelengths and broadening asymmetrically by virtue of the Doppler effect in combo with the "beaming" effect predicted by Einstein's special theory of relativity. So there.
Neural biomech leads the prosthetics revolution: The newest challenge in designing tomorrow's prosthesis -- linking the devices to the nervous system to control them in a real-time fashion. Researchers at a recent IEEE bioengineering conference discussed high-performance neural microarray sensor nets implanted in the brain (for piano-playing artificial limbs), algorithms that could offer basic function control with signals from an electroencephalogram monitor worn on the scalp, successful experimentation with single-finger flexing using as few as 30 neurons, how much of the effort should be shifted to algorithm development away from electronics (the finer the movement, the less effective the electronics are; more may be gained by tuning the math responding to the signals), various worn and implanted devices to read and analyze brain signals at frequencies from 1Hz to 10kHz, and what method is best to capture signals.