Matter, by definition, has mass and takes up space. Mass is generally defined as a quantitative measure of inertia. Inertia is the resistance of matter to a change in its speed or position as a result of the application of a force. The greater the mass...

Although Flemish chemist Jan van Helmont (1579-1644) and British chemist Robert Boyle (1627-1691) stated versions of a law of indestructibility of matter, it is French chemist Antoine Lavoisier (1743-1794) who is usually given the credit for first...

Although Flemish chemist Jan van Helmont (1579-1644) and British chemist Robert Boyle stated versions of a law of indestructibility of matter, it is French chemist Antoine Lavoisier (1743-1794) who is usually given the credit for first clearly...

The 'law of conservation of mass/matter', also known as law of mass/matter conservation (or the Lomonosov-Lavoisier law), states that the mass of a closed system will remain constant, regardless of the processes acting inside the system. An equivalent...

“Bush’s move cheers conservative base,” is how the Los Angeles Times treated the President’s decision one week ago to commute “Scooter” Libby’s 30-month prison term. The story, one of many like it that appeared in newspapers and on television newscasts, was inevitable, since the most...

The official code of conduct for South Korea's main spy agency was once "work in the shadows, aim for the light" _ meaning that missions should be carried out in secret in pursuit of the national interest.So South Koreans were surprised when Kim Man-bok, the...

Watching Wednesday’s G.O.P. debate, it was remarkably easy to imagine Rudy Giuliani as his party’s nominee next fall. Forget the endless talk about a mutiny from the right: Most “social conservatives”—a term that casts a much wider net than most analysis allows for—have been in...