New find raises questions regarding size and timing of large settlements in Central America.
New design is able to stabilize itself.
Regular improvements in so-called optical clocks are setting the stage for a redefinition of the second and powering searches for new laws of physics.
New proof of concept could guard against the disorienting effects of laser pointers invading the cockpit.
Innovations in laser methods and technology won Nobel Prizes in 2017 and 2018, but not all lasers are the same.
Optical tweezers developed by a new Nobel laureate could potentially be used on slightly larger objects, but not spacecraft.