Tremors

Five tremors in excess of magnitude 5.0 on the Richter scale have shaken Japan just this week, but scientists are warning that the largest expected aftershock has yet to hit.

Rock Steady Boxing (RSB) was designed especially for people with Parkinson's, a neurodegenerative disorder that leads to tremors and balance problems.

The screams are harmonic tremors, and researchers at the University of Washington believe they are caused when magma is forced through a narrow conduit at greater and greater pressure into the heart of the volcano.

This year, investigators in New York and Australia began a clinical trial involving a therapy to treat patients with Parkinson's disease, a neuro-degenerative illness that causes severe tremors, muscle rigidity and poor coordination.