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Researchers sift through data to compare nations’ vastly different containment measures. Whose coronavirus strategy worked best? Scientists hunt top policies Researchers sift through data to compare nations’ vastly different containment measures.

The company says that its quantum computer is the first to perform a calculation that would be practically impossible for a classical machine. The company says that its quantum computer is the first to perform a calculation that would be practically impossible for a classical machine.

Emissions data for different locations could help researchers to reduce the environmental cost of machine-learning experiments. Emissions data for different locations could help researchers to reduce the environmental cost of machine-learning experiments.

Researchers who study Earth's movement are reporting a drop in seismic noise - the hum of vibrations in the planet's crust - that could be the result of transport networks and other human activities being shut down. [...]although the effects from individual sources might be small, together they produce background noise, which reduces seismologists' ability to detect other signals occurring at the same frequency. The fall in noise could also benefit seismologists who use naturally occurring background vibrations, such as those from crashing ocean waves, to probe Earth's crust. Because volcanic activity and changes to water tables affect how fast the natural waves travel, scientists can study these processes by monitoring how long it takes a wave to reach a given detector. Celeste Labedz, a graduate student in geophysics at the California Institute of Technology in Pasadena, tweeted that a \"seriously wild\" fall in noise had been picked up by a station in Los Angeles.

Scepticism surrounds the ultimate potential of D-wave machines, but researchers are already finding uses for them.

DeepSeek-R1 performs reasoning tasks at the same level as OpenAI’s o1 — and is open for researchers to examine. DeepSeek-R1 performs reasoning tasks at the same level as OpenAI’s o1 — and is open for researchers to examine. DeepSeek website seen on an iPhone screen. Credit: Koshiro K/Alamy

A Nature analysis explores the investors betting on quantum technology. The science is immature and a multi-purpose quantum computer doesn’t yet exist. But that isn’t stopping investors pouring cash into quantum start-ups. Xanadu's integrated nanophotonic room temperature quantum chip

The experimental Joint European Torus has doubled the record for the amount of energy made from fusing atoms — the process that powers the Sun. The experimental Joint European Torus has doubled the record for the amount of energy made from fusing atoms — the process that powers the Sun. Credit: Christopher Roux (CEA-IRFM)/EUROfusion (CC BY 4.0) JET internal vessel view.