Nanoscale machines convert light into work

Researchers have developed a tiny new machine that converts laser light into work. These optically powered machines self-assemble and could be used for nanoscale manipulation of tiny cargo for applications such as nanofluidics ...

UV lamps used for disinfection may impair indoor air quality

Using ultraviolet germicidal radiation (UVGI) to disinfect indoor spaces is a demonstrably effective way of deactivating various pathogens (including the SARS-CoV-2 coronavirus). It deactivates bacteria and viruses by exposing ...

Bottom-trawling techniques leave different traces on the seabed

Fishing fleets around the world rely on nets towed along the bottom to capture fish. Roughly one-fifth of the fish eaten globally are caught by this method, known as bottom trawling, which has been criticized for its effects ...

Sea turtles with tumors fill Florida hospital

The young patient writhes on the operating table, kicking its flippers. A team of medical attendants turns it over, revealing an underbelly cluttered with tumors, some as big as golf balls.

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