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Longtime Slashdot reader cristiroma shares a report from New Atlas: Wouldn't it be great if the plants in your home could do more than just sit there looking pretty? Researchers at South China Agricultural University in the city of Guangzhou have found a way to upgrade them into soft glowing night lights in a range of hues, with the use of nanoparticles. The team developed a light-emitting phosphor compound that enabled succulents with fleshy leaves to charge in sunlight or indoor LED light in just a couple of minutes, and then emit a soft uniform glow that lasts up to two hours. The afterglow phosphor compound -- which is similar to those found in glow-in-the-dark toys -- is inexpensive, biocompatible, and negates the need for more complex methods of infusing bioluminescence in plants, like genetic modification. It simply gets injected into the leaves. [...] Beyond modifying a commercial compound for this project, the team also had to figure out the right size for the phosphor particles so they'd work as intended inside plants. Shuting Liu, first author on the study that appeared in Matter this week, noted, "Smaller, nano-sized particles move easily within the plant but are dimmer. Larger particles glowed brighter but couldn't travel far inside the plant." Through extensive testing, the researchers arrived at an optimal size of around 7 micrometers, about the width of a red blood cell. They also determined through experimentation that the particles worked best in succulents, rather than plants with thinner leaves like bok choy. Once they'd landed on the right particle size, loading concentration, and plant type, the team found that the phosphor material diffused into succulent leaves almost instantly, and uniformly lit up entire leaves -- enough to illuminate nearby objects. The scientists were also able to create modified phosphors that glowed in colors like green, red, and blue. That could make for novel indoor or garden decor, as well as pathway lighting. These luminous plants also don't cost much -- according to Liu, "Each plant takes about 10 minutes to prepare and costs a little over 10 yuan (about $1.4), not including labor." Over the course of 10 days, the injected plants didn't show any signs of damage, yellowing, structural integrity, or even reduced levels of chlorophyll.

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An anonymous reader quotes a report from CBS News: They look, move and even smell like the kind of furry Everglades marsh rabbit a Burmese python would love to eat. But these bunnies are robots meant to lure the giant invasive snakes out of their hiding spots. It's the latest effort by the South Florida Water Management District to eliminate as many pythons as possible from the Everglades, where they are decimating native species with their voracious appetites. In Everglades National Park, officials say the snakes have eliminated 95% of small mammals as well as thousands of birds. "Removing them is fairly simple. It's detection. We're having a really hard time finding them," said Mike Kirkland, lead invasive animal biologist for the water district. "They're so well camouflaged in the field." The water district and University of Florida researchers deployed 120 robot rabbits this summer as an experiment. Previously, there was an effort to use live rabbits as snake lures but that became too expensive and time-consuming, Kirkland said. The robots are simple toy rabbits, but retrofitted to emit heat, a smell and to make natural movements to appear like any other regular rabbit. "They look like a real rabbit," Kirkland said. They are solar powered and can be switched on and off remotely. They are placed in small pens monitored by a video camera that sends out a signal when a python is nearby. "Then I can deploy one of our many contractors to go out and remove the python," Kirkland said. The total cost per robot rabbit is about $4,000, financed by the water district, he added.

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