Q&A: Expert discusses wildfire smoke and air quality

New York City set a record last week for the worst recorded air quality the city has ever seen due to wildfire smoke drifting from Canada. At its peak, the Air Quality Index (AQI) for the city reached 405 out of 500 —the ...

Electron re-collision tracked in real time

The motion of an electron in a strong infrared laser field is tracked in real time by means of a novel method developed by MPIK physicists and applied to confirm quantum-dynamics theory by cooperating researchers at MPI-PKS. ...

Venus: Proof of active volcanoes—at last

Venus is almost the same size, mass and density as Earth. So it should be generating heat in its interior (by the decay of radioactive elements) at much the same rate as the Earth does. On Earth, one of the main ways in which ...

Measuring times in billionths of a billionth of a second

How fast do electrons inside a molecule move? Well, it is so fast that it takes them just a few attoseconds (a billionth of billionth of a second) to jump from one atom to another. Blink and you missed it—millions of billions ...

page 2 from 6