THE suggestion recently put forward 1 that a logarithmic scale should be used for high-vacuum measurements directs attention to the fact that, while increasing use is being made of logarithmic scales ...

Two hundred years ago, Missouri was rocked by an earthquake so severe it made the Mississippi River flow backward and set off church bells in Boston more than 1,000 miles away. These details help ...

Sir, In Jude Webber’s article on the Mexico earthquake (“Mexican death toll hits 90 from massive earthquake”, September 10), she reports that quakes are measured on a scale of 0 to 10. More precisely, ...