Biophysicists have finally solved how the bacterial flagellar motor works after 50 years of study. This molecular machine, which rotates at hundreds of revolutions per second to propel bacteria toward food, operates through a force called "proton motive force" — the same energy source that powers processes in all living cells. Recent studies since 2020 have mapped the motor's molecular structures, including the small cogwheels that turn the larger one at the flagellum's base. The discovery resolves a puzzle that creationists had cited as evidence of "irreducible complexity," and reveals a fundamental physical mechanism underlying life itself.
The bacterial flagellar motor was discovered in the 1970s by Howard Berg at Harvard. It combines propeller and signal-processing functions in a self-assembling machine used by virtually all motile bacteria. Creationists have long held it up as too complex to evolve gradually.
Blue Origin achieved its first successful reflight of an orbital-class booster on Sunday, landing the first stage of its New Glenn rocket on a ship in the Atlantic. The milestone brings Jeff Bezos' company closer to matching SpaceX's reuse cadence for heavy-lift launches. But the celebration was short-lived: the upper stage failed to reach its target orbit, releasing AST SpaceMobile's communications satellite into an orbit too low to sustain operations. The roughly 6-ton spacecraft, with its 2,400-square-foot antenna array, will be de-orbited. AST expects to recover costs through insurance. The twin-engine upper stage had performed correctly on New Glenn's first two flights last year.
New Glenn is a 321-foot heavy-lift rocket critical to NASA's Artemis lunar program. Blue Origin has reused its smaller New Shepard suborbital booster many times, but orbital reuse at this scale is new for the company. SpaceX's Falcon 9 has set the industry standard with boosters reflown in as little as nine days.
Tesla claimed to launch unsupervised robotaxi service in Dallas and Houston over the weekend, but tracking data shows minimal actual availability. Elon Musk promoted the service on Saturday, yet by Monday morning both cities showed as "unavailable" on crowd-sourced trackers, with service areas of just 31 and 25 square miles respectively. By comparison, Tesla's Austin service shows 46 vehicles active. The timing, days before Tesla's Q1 earnings report, follows a pattern: Tesla announced unsupervised Austin rides just before Q4 earnings, only to see them dwindle afterward. Safety concerns persist — Tesla reported 14 robotaxi crashes since launch, with key details redacted from federal filings. One video shows a Dallas robotaxi mistakenly entering a freeway before remote operators intervened.
Tesla's robotaxi service relies on camera-based systems without lidar, differing from competitors like Waymo. Waymo also recently launched in Dallas and Houston with minimal fleets — approximately 16 vehicles in Dallas and one in Houston.
China's commerce ministry warned the European Commission that it will hit EU firms with reciprocal measures if Brussels proceeds with draft cybersecurity regulations targeting Chinese companies. In a 30-page submission, Beijing stated it could launch investigations and take reciprocal action if the EU designates China as a "cybersecurity concern" or lists firms like Huawei and ZTE as "high risk suppliers" to be phased out. The proposed act would make mandatory what has been voluntary — removing flagged vendors from 5G networks within three years — and could extend to connected vehicles, cloud computing, medical devices, and semiconductors. This marks the first time Brussels has attempted compulsory exclusion.
The EU cybersecurity act was announced in January 2026 and remains in draft form. Several EU members have already restricted Huawei from 5G networks voluntarily, but the new law would make this mandatory across all 27 member states and expand to additional critical sectors.
The US-Israeli war on Iran has choked off a significant portion of global helium supply, sending prices up 50 percent and threatening shortages for medical procedures, scientific research, and semiconductor manufacturing. The rare gas, also critical for rocket launches including the recent Artemis II mission, is not renewable. The crisis follows decades of warnings about US helium policy: the federal government sold off the strategic helium reserve despite repeated alerts about supply vulnerability. Qatar and Russia are major alternative sources, but the Strait of Hormuz closure has disrupted shipments. Even if shipping routes reopen, the month-long disruption will cause lasting supply shocks across industries dependent on the element.
The US Federal Helium Reserve, established in 1925, was privatized and sold off in recent years despite objections from scientists and industry groups. Helium is extracted from natural gas and cannot be synthesized. Major uses include MRI cooling, semiconductor fabrication, and aerospace pressurization.
Humanities professors are leaving Texas public universities after administrators banned teaching of Plato's Symposium, Romeo and Juliet, and other works containing gender and sexuality content. Texas A&M philosophy professor Martin Peterson departs after being told his course on Plato violated system restrictions. Texas Tech writing professor Lucy Schiller and history professor Jacob Bell are also leaving, with Bell noting he will teach "the exact same thing, but unredacted" at CUNY. Texas Tech's chancellor announced plans to close all gender and sexuality programs and bar graduate research on these topics. Texas A&M shuttered its women's and gender studies program in January. Faculty describe campus atmosphere as "a wake," with students and even conservative groups expressing dissatisfaction with the policies.
Texas public university systems have implemented escalating censorship since late 2025, with course reviews screening materials for gender and sexuality content. The University of Texas ordered faculty in February to avoid teaching undefined "controversial" topics. Nearly all Texas public systems have conducted such reviews.
Palantir CEO Alex Karp and co-founder Nicholas Zamiska argue in a new manifesto that Silicon Valley owes a "moral debt" to the country that requires participation in national defense, and that "national service should be a universal duty." The 22-point document, summarizing their 2025 book The Technological Republic, calls for tech companies to shift from consumer apps to weapons and surveillance systems. It dismisses debates about AI weapons as "theatrical" and frames tech's role as delivering "security" through military and policing applications. The manifesto also demands public deference to elites, stating "we should show far more grace towards those who have subjected themselves to public life" and calling for resistance to "the ruthless exposure of the private lives of public figures."
Palantir provides data analysis tools for military operations, predictive policing, and surveillance. The company has faced criticism for its work with immigration enforcement and military applications. The manifesto follows recent Pentagon disputes with AI company Anthropic over military cooperation.
A 20-year study of 11 International Space Station astronauts reveals that human brains never fully adapt to weightlessness. Researchers found that even after five months in orbit, astronauts gripped objects as if they weighed more than they did, moving slower and squeezing harder than necessary. The brain retained its Earth-based predictions about object weight despite knowing intellectually that objects are weightless in space. This "safety margin" suggests adaptation reaches an optimal level for function without fully overwriting decades of gravitational experience. The upside: re-adaptation to Earth gravity happens within a day of return. The findings, published in the Journal of Neuroscience, carry implications for long-duration missions to Mars where astronauts will face partial gravity rather than full weightlessness.
Microgravity is known to affect astronaut balance, vision, heart shape, and brain position within the skull. This study, led by Philippe Lefévre at Belgium's Catholic University of Louvain, specifically examined sensorimotor adaptation using rhythm and grip experiments conducted aboard the ISS.
Chinese customs data shows imports from Iran collapsed 48 percent year-on-year in March, while exports to Iran dropped 90 percent. Exports to eight Persian Gulf economies including Saudi Arabia and Qatar fell 57 percent, with imports down 33 percent. The disruption follows the effective closure of the Strait of Hormuz, which handles about 20 percent of global oil. China's oil imports from Gulf countries fell 25 percent year-on-year. Beijing has partially offset shortfalls through increased shipments from Russia, Malaysia, and Indonesia. The data confirms that even China, with its strategic petroleum reserves, has not escaped economic impact from the US-Israeli war on Iran. Analysts note the strait has become a permanent geopolitical lever that will sustain security premiums in energy and shipping costs regardless of ceasefire outcomes.
The Strait of Hormuz closure began February 28, 2026. China had proactively stockpiled oil before the war, which has cushioned domestic impacts. The NDRC head warned this week that global supply chains are more fragile than previously understood.
A magnitude 7.7 earthquake off Japan's Honshu island on Monday triggered tsunami warnings and a rare "megaquake advisory" from the Japan Meteorological Agency. While small waves reached the coast without significant damage, the JMA calculated a 1 percent chance of a magnitude 8.0 or greater quake in coming days — ten times the normal probability. The concern stems from stress redistribution along the Japan Trench, where the Pacific plate submerges beneath the North American plate. Such aftershock probabilities, while low in absolute terms, represent significant risk management thresholds. The advisory system, first used in August 2024, does not forecast specific events but alerts nearby populations to prepare evacuation routes and emergency supplies.
Japan's megaquake advisory system was created after the 2011 Tohoku earthquake and tsunami, which exceeded predicted maximum magnitudes for the region. The Japan Trench has produced magnitude 9.0+ events historically. Monday's quake was followed by multiple magnitude 5.0+ aftershocks.
