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Quantum advantage reassessed: More realistic benchmarks for quantum algorithms

Quantum advantage refers to the point at which a quantum computer solves a clearly defined task faster or more efficiently than any classical computer—or makes it solvable in the first place. For many practical applications, this has not yet been demonstrated. Research therefore relies heavily on theoretical models and simulations to explore where and under what conditions such an advantage may realistically be achieved in the future.

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Q&A: Why is the Amish population growing so fast in America?

The Amish, a Christian denomination and a three-century-old ethnic group of German migrants known for its strict lifestyle standards, are one of the fastest-growing minority populations in the U.S. For more than a century, the number of Amish people—whose American lineage traces back to Pennsylvania in the early 1700s and the Midwest by the mid-1800s—has grown rapidly, from several thousand in 1910 to 250,000 a century later.

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Recyclable glue bonds underwater in seconds and holds for years

Most glues need a dry surface to stick properly. Bonding materials underwater is challenging because water forms a thin film on any surface, so instead of an adhesive touching a material directly, it touches a layer of water, which weakens the bond. But scientists from China have now created a superglue that repels water and forms a strong, recyclable bond within seconds, as they report in a paper published in Nature Communications.

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Moonquakes could reveal buried lunar ice for future explorers

The surface of the moon is a bleak and forbidding place that could be hiding a lot of water ice within its dusty landscape. However, most possible ice deposits don't just stand out in an image. Scientists need specialized mapping to find those deposits, so they have devised another way to find the moon's frosty hidden reserves. They use seismic waves from moonquakes as locator beacons.

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Bumblebees can learn to associate new smells with their queen

Bumblebees are able to learn to associate new odors with their colony's queen, instead of being preprogrammed to recognize the queen's pheromones from birth, according to a new study led by researchers at Penn State. For the study, published in the journal Communications Biology, the researchers treated buff-tailed bumblebee queens daily with one of two different floral scents as they built their colonies.

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Q&A: Flesh-eating screwworms have returned. Which new technologies could stop them?

They may look like any ordinary species of flies buzzing around on any given day, but the New World screwworm is quite extraordinary. Screwworm flies are highly destructive parasitic flies that feed on the tissue of warm-blooded animals, including humans (though the risk to humans is low). They burrow in a spiral (screw) pattern into wounds and bodily openings such as the ears, nose and mouth, laying hundreds of eggs.

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The way trees sway may communicate water stress

The Western U.S. is experiencing periods of increasingly intense drought, and higher temperatures are exacerbating the issue by drawing even more moisture from plants and soils into the atmosphere. The results can be seen in the ever-expanding wildfire footprint, with many of the region's largest recorded wildfires occurring over the past decade. One DRI scientist is innovating a new way to monitor water stress in trees—one that may help monitor wildfire risk across the region.

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New wildfire research system follows ecosystems from controlled burns through long-term recovery

On a perfect, crisp fall day with blue skies, scientists in yellow safety coats gather in the sprawling desert north of Reno. They watch as flames consume a burning bush and quickly spread through the surrounding grass. The fire is completely controlled and monitored by dozens of sensors as three enormous drones buzz directly overhead, following the curl of smoke as it dances in the light breeze.

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