09/09/2021

California wildfires at risk of sparking as wind blows in

A weather system approaching northwest California was expected to bring dry lightning and blustery winds by late Thursday, unleashing a risk of new wildfires as thousands of firefighters have been making headway against existing ...

The seismic zone worrying quake-hit Mexico

A 7.1-magnitude earthquake that struck southern Mexico this week originated near a section of a fault that experts worry has been building up tension for more than a century.

Reconfigurable metasurfaces provide nanoscale light control

Researchers have designed electromechanically reconfigurable ultrathin optical elements that can be controlled and programmed on a pixel-by-pixel level. These versatile metasurfaces could offer a new chip-based way to achieve ...

Researchers report an insulator made of two conductors

Ohm's law is well-known from physics class. It states that the resistance of a conductor and the voltage applied to it determine how much current will flow through the conductor. The electrons in the material—the negatively ...

Reusable cloth masks hold up after a year of washing, drying

The reusable cloth masks people have been using for the past year or more may look a little worse for the wear. But new research from the University of Colorado Boulder finds that washing and drying them doesn't reduce their ...

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