Moreover, the process is gentle enough to be used to examine the surfaces of cells without damaging them.

ECONOMIST: Microscopy

The stent procedure, while gentle enough to be used on patients too sick for open abdominal surgery, is not for every patient, says Dr. Kenneth Ouriel of the Cleveland Clinic.

FORBES: By the Numbers

Then, at the last moment, rocket nozzles on the rotor tips will be powered up, providing enough lift to ensure a gentle, controlled landing.

ECONOMIST: On a rotor-blade and a prayer | The