China’s tobacco monopoly has become so financially vital to the government that even its powerful leader has failed to curb the country’s smoking habit.

An anonymous reader quotes a report from Wired: Aerodynamic drag is a major "barrier" in high-speed airplanes, automobiles, and bullet trains. This is because a design with less aerodynamic drag allows the aircraft to move at higher speeds with less energy. When an aircraft or car body moves at high speed, a thin layer of air called the "boundary layer" is formed on its surface. This boundary layer has two states: laminar flow, in which air flows in an orderly fashion, and turbulent flow, which involves turbulence. The longer the air stays in the laminar flow state with low friction, the smaller the air resistance becomes, but as the air speed increases, it transitions to turbulent flow. The key to reducing aerodynamic drag is how to delay this transition to turbulence. For more than 80 years, the principle of "the surface of an object must be smooth" has been the basic premise of aeronautical engineering throughout the world in order to suppress the transition to turbulence and reduce aerodynamic drag. This premise was based on the results of a 1940 study by Ichiro Tani, a Japanese aerodynamicist who quantitatively demonstrated the relationship between "surface roughness" (an indicator of the state of the machined surface) and turbulent transition, arguing that surface roughness, which was unavoidable with the manufacturing technology of the time, prevented laminar flow from being realized. However, in 1989 Tani reinterpreted the experimental data on rough-surface pipes obtained by fluid engineer Johann Nikulase in the 1930s, bringing a new perspective that "roughness may not necessarily only promote turbulent transition and increase fluid resistance." Inheriting this idea, a research group led by Yasuaki Kohama of Tohoku University experimentally demonstrated in the 1990s that fibrous rough surfaces, which have fine fibrous irregularities on their surface, have the effect of delaying transition under certain conditions. The same Tohoku University research team recently announced a discovery that significantly advances this trend. Aiko Yakino, associate professor at Tohoku University's Institute of Fluid Science, and her research group were the first in the world to demonstrate that aerodynamic drag can be reduced by up to 43.6 percent simply by applying distributed micro-roughness (DMR), a surface roughness so fine and irregular that it cannot be distinguished by the naked eye. This technology is fundamentally different from the "rivulet (shark skin) process," which is known as a typical aerodynamic drag reduction technology. The rivulet process mimics the fine longitudinal grooves in shark skin, and by carving grooves approximately 0.1 mm wide along the direction of airflow, it aligns the vortices that occur near the wall surface of turbulent airflow areas. DMR, on the other hand, delays the switch from laminar to turbulent flow by means of random and minute irregularities. The flow zones it affects and the mechanisms it employs are based on completely different concepts.

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President Trump’s record of ousting those he sees as disloyal continued apace with Senator John Cornyn’s defeat. Whether his relationship with Senate Republicans can be repaired is another question.

Mr. Allred beat the incumbent, Representative Julie Johnson, and is now favored to win the general election in a heavily Democratic Dallas-based district.

Alabama is likely to appeal the ruling, which stops an effort to use a new congressional map that would likely cost Democrats a majority-Black district.

The chief, Brian O’Hara, began leading the department in 2022 as it reeled in the aftermath of the police killing of George Floyd.

Ken Paxton, the Texas attorney general, overcame scandals and a significant fund-raising disadvantage to win. His victory sets up the general-election clash that Democrats had hoped for.

The director of Britain’s electronic surveillance agency warns that Russia is only getting more brazen as battlefield losses in Ukraine mount.

The health secretary wrangled two nonvenomous snakes while visiting Florida in a video that drew widespread attention.

With the support of President Trump, Mr. Paxton unseated Senator John Cornyn in a high-profile Republican runoff.

He ran the newspaper division of Advance Publications, while his older brother, Si, ran the Condé Nast magazine operation.

The Ultimate Fighting Championship bout is scheduled for June 14, President Trump’s 80th birthday.

Lawyers representing federal workers said the move is intended to chill speech and could be challenged on First Amendment grounds.

Hobbyist CNCDan is trying to build a real-world version of Windows' classic 3D Pinball for Windows -- Space Cadet, using 3D-printed flippers, bumpers, LEDs, slingshots, and a raised playfield modeled after the original virtual table. But in bringing the digital table into the real world, CNCDan has already run into several physical challenges the software never had to contend with... Ars Technica reports: After scaling and skewing the on-screen, perspective-shifted view of the Space Cadet playfield onto a 1-meter-tall table, he ended up with a rectangular playfield just 56 cm wide. That's on the smaller side for commercial pinball tables and maps to playfield bumpers that are just 53 mm wide -- way smaller than any prebuilt bumpers that are commercially available. Once CNCDan dealt with issues with unreliable plastic microswitches for those tiny bumpers (Hall effect magnets seemed to help), he ran into a separate problem with the even smaller bumpers on the raised playfield. The wiring for those bumpers had to be arranged very carefully to avoid blocking a kickback return alley underneath, a positioning problem that the original designers of the virtual table didn't have to consider at all. CNCDan also ended up adding a physical mechanism to simulate the short delay 3D Space Cadet players may remember, when the ball dropped down a hole from the raised playfield back to the flippers below. CNCDan says he's currently looking for artists to help him with a hand-drawn re-creation of the original Space Cadet playfield, which he doesn't want to use AI for. "I'm sure [AI] can do it, but I'd much rather give this job to a real human being," he said in the video.

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For a split second, a fireball outshone the rivers of molten lava flowing from the Philippines’ most active volcano.

In past outbreaks, Americans exposed to the virus were sent home to be treated in state-of-the-art facilities. The Trump administration has already flown some U.S. citizens to Europe for treatment.

An anonymous reader quotes a report from the BBC: Internet access has started to be restored in Iran after being cut off almost three months ago, the country's first vice-president has said. "The first step toward free and regulated access to cyberspace has been taken," Mohammad Reza Aref wrote on X on Tuesday. Internet monitoring groups Netblocks and Kentik reported "partial" restoration around 13:00 GMT, though the latter warned most networks were still down. The Iranian government cut internet access following the launch of US and Israeli attacks on February 28. Officials suggested the aim was to prevent surveillance, espionage and cyber-attacks. It is one of the longest-running national internet shutdowns ever recorded worldwide. A content creator from Tehran told the BBC that he had been able to connect to the internet using his home WiFi on Tuesday. "The main point is, some of my income will come back," he said. Netblocks said it was unclear whether the internet return would be sustained, and told the BBC it was consistent with what it had seen when previous blackouts were lifted -- where restoration could take hours. "Access is not universally back to its original state, with some regional variation," said the global internet tracker's research director Isik Mater on Tuesday. She added that there were signs of "more extensive filtering" than prior to January -- when a similar blackout was imposed during the regime's deadly crackdown on anti-government protests -- "including additional restrictions to messaging apps like WhatsApp."

Read more of this story at Slashdot.

With early voting already underway, it became clear there was no longer enough support to use new lines before the November midterm elections.

Pope Leo XIV’s spiritual message on artificial intelligence arrived as Silicon Valley’s A.I. enthusiasts pursue their own spirituality through technology.

The plaintiffs had sought a temporary restraining order, arguing that the map violated a state ban on partisan gerrymandering that voters passed in 2010.