The study is said to be the first to examine in detail measurements of bone strength instead of bone density.

VOA: special.2009.03.10

Professor Keyak says the measurement is much greater than monthly reductions in bone mineral density of point four percent and one point eight percent.

VOA: special.2009.03.10

This mixing is a product of the oceans' density and buoyancy.

VOA: special.2011.06.22