News
- Physics
Surface reaction recorded in real time
Ultrafast laser pulses may have for the first time revealed the incredibly rapid, step-by-step progress of a complete chemical reaction on a surface, at the actual speed at which it took place.
- Physics
Cold sliver may sense electron quiver
By detecting vibrations of less than an atom's width of a tiny cantilever, physicists have made the most sensitive measurement of force ever by mechanical means.
- Earth
Oops! Tougher arsenic rule retracted
The new EPA administrator has delayed by 60 days the implementation of a final rule issued by the Clinton administration lowering the amount of arsenic allowed in drinking water.
