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How a floating fern withstands rain

The tropical floating fern Salvinia molesta has developed sophisticated structures to allow water to roll off its leaves quickly—even during heavy rainfall. This relieves the pressure on the leaves floating on the water ...

Color-sorting metalenses boost imaging sensitivity

Researchers have shown that newly designed pixel-scale metasurface lenses—flat surfaces that use nanostructures to manipulate light—can be used to make imaging sensors that are roughly three times more sensitive than ...

New phenomenon: Forest mammals eavesdrop on messy monkeys

Eavesdropping doesn't just belong in the playbooks of police officers and spies. It is also a phenomenon that plays out among animals. Previous studies have shown that certain species, especially birds, listen to each other ...

Image: Hubble gazes at a dazzling spiral galaxy

This image from the NASA/ESA Hubble Space Telescope features the spiral galaxy Mrk (Markarian) 1337, which is roughly 120 million light-years away from Earth in the constellation Virgo. Hubble's Wide Field Camera 3 snapped ...

Researchers shrink camera to the size of a salt grain

Micro-sized cameras have great potential to spot problems in the human body and enable sensing for super-small robots, but past approaches captured fuzzy, distorted images with limited fields of view.

NASA's Lunar Reconnaissance Orbiter images Saturn

From a viewpoint about 90 kilometers (56 miles) above Lacus Veris, "Lake of Spring," the camera aboard NASA's Lunar Reconnaissance Orbiter (LRO) spacecraft imaged Saturn on October 13, 2021. In this view, the Lunar Reconnaissance ...

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