Researchers at the University of Alabama at Birmingham have solved the structure of the gp41 cytoplasmic tail, the last unknown protein structure of HIV-1. The finding completes the virus's structural map and may support efforts to block viral assembly and replication.
Li Zifeng, a professor of oil drilling and engineering at China's Yanshan University, claims he has disproven Einstein's theory of relativity after two decades of work. He says the university has not approved or recognized his research, and his claims have drawn widespread online mockery, according to the Global Times.
Astrophysicist Neil deGrasse Tyson told Stephen Colbert that Dune: Part Two gets sand physics wrong, arguing sand cannot be thumped to produce sound and that giant sandworms should move in S-shaped curves. Tyson acknowledged the film needs these liberties, while Colbert defended the fictional logic.
Daimler plans to 3D print spare parts on demand instead of shipping them worldwide, reducing shipping, storage, and excess production costs. The selective laser sintering process limits production to small batches, excluding large metal body panels.
Transcatheter aortic valve implantation (TAVI) is expanding treatment options for aortic stenosis, while researchers pursue robotic, decellularized, and 3D-printed artificial hearts. The high cost of TAVI and a growing donor shortage underscore the need for alternatives, though early detection remains the most cost-effective approach.
New reporting by Nature details how trifluoroacetic acid, a breakdown product of PFAS and fluorinated gases, has spread through rainwater, tap water, and ecosystems worldwide. A study found TFA in 94 percent of tap water samples across 11 European countries, while regulators and industry dispute its risks.
The provided material consists only of the headline 'Runaway Greenhouse Simulation Reveals Alarming Climate Tipping Point' and the fragments 'Greenhouse of Usher' and 'Hell Hole.' No verifiable details, data, or sources are present, so a substantive news article cannot be produced.
Smoke from wildfires in Canada's Manitoba province has triggered air quality warnings across eight U.S. states and four Canadian provinces. Millions of residents in cities including New York, Detroit, Dallas, and Houston are under alerts, with officials urging sensitive groups to stay indoors.
Researchers from the University of Basel's Swiss Nanoscience Institute and colleagues in Japan used an atomic force microscope with a carbon monoxide–modified tip to directly measure the force and distance of hydrogen bonds in propellane compounds. The work, published in Science Advances, could support future identification of three-dimensional molecules such as DNA and polymers.
Scientists at JILA and NIST have built a three-dimensional quantum gas clock using strontium atoms that sets a new quality factor record and achieves errors of just 3.5 parts in 10 quintillion. The design, the first to use a degenerate Fermi gas, could improve timekeeping and aid the search for dark matter.
Physicists have identified several candidate limits for the hottest possible temperature, from the 7.2 trillion degrees Fahrenheit achieved in gold-particle collisions at the Large Hadron Collider to theoretical ceilings like the Planck temperature. The exact maximum remains unknown because extreme predictions cannot be tested.
A yet-to-be-peer-reviewed paper by Muhammad Ghulam Khuwajah Khan proposes treating space as a viscous fluid containing 'spatial phonons' to reconcile discrepancies between Dark Energy Spectroscopic Instrument and Dark Energy Survey data and the standard Lambda Cold Dark Matter model. If validated, the theory could explain why dark energy appears to weaken over time.
Netflix registered a trademark for 'Space Force' in January 2019, eleven months before the US military branch of the same name was founded. An Air Force spokesperson told the Hollywood Reporter there is no current conflict, though the streaming service holds the earlier claim.
Hurricane Ida struck New Orleans, then caused deadly flooding in New York, New Jersey, and Pennsylvania, killing at least 20 people in the Northeast. Central Park recorded 3.14 inches of rain in one hour and Newark Airport 3.24, rainfall that experts say is linked to climate change and likely to recur.
The Ocean Cleanup, founded by Boyan Slat, used its Jenny barrier system to collect nearly 20,000 pounds of plastic from the Great Pacific Garbage Patch. While the nonprofit aims to remove 90 percent of floating ocean plastic by 2040, experts question the system's effectiveness because it only targets surface-level debris and relies on fossil-fuel-powered vessels.
The Exploration Vessel Nautilus crew studying the Liliʻuokalani Ridge in the Pacific Ocean filmed a dried lake bed formation that resembles a 'yellow brick road' to Atlantis. The Nautilus team says it is actually ancient active volcanic geology, not a mythical city.
Data from the University of Nebraska-Lincoln drought monitor shows 45 US states are experiencing at least moderate drought, with Colorado and North Carolina among the hardest hit. The dry conditions are damaging winter wheat crops and raising wildfire risks as above-normal temperatures persist.
A new study in Antarctic Science led by Peter Doran of Louisiana State University suggests that the weight and movement of the Taylor Glacier pushes briny, iron-rich water from a buried lake to the surface, creating Antarctica's Blood Falls. GPS, time-lapse imagery, and temperature data show a 2018 eruption coincided with the glacier dropping less than an inch.
Astronomers using NASA's Swift satellite found a wind nebula around magnetar Swift J1834.9-0846, the first such detection. The finding challenges the view that only young pulsars can sustain these high-energy clouds, and researchers are investigating how the slow-spinning magnetar powers it.
Researchers at the University of Maryland have designed solar smart windows that use liquid crystals and amorphous silicon to switch between transparent and light-blocking states while storing solar energy. The NASA-funded study, published in ACS Photonics, could reduce the need for curtains and improve energy efficiency in buildings and optoelectronic devices.
