Anybody can develop high frequency hearing loss, but it becomes more common with age. Exposure to loud sounds or high frequency sounds are common causes of ear damage in younger people.

They bio-accumulate and persist, and so the frequency of spill, the volume of spills, all contribute to this cumulative impact around those toxins in the environment," he said. Heavy fuels are ...

In his book The Mathematical Universe, mathematician William Dunham wrote of John Venn’s namesake legacy, the Venn diagram, “No one in the long history of mathematics ever became better known ...