ScienceDaily |
Popis: Breaking science news and articles on global warming, extrasolar planets, stem cells, bird flu, autism, nanotechnology, dinosaurs, evolution...
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This protective enzyme could help stop fatty liver disease from getting worse16:07 Scientists have identified an enzyme that may act as a natural defense against the worsening of fatty liver disease, which affects an estimated 100 million Americans. The enzyme, called UBE2N, helps liver cells clear away damaged mitochondria and break down fat, potentially preventing the inflammation, scarring, and cell damage associated with the more dangerous condition MASH. ESA’s Juice just used Earth as a slingshot to Jupiter16:07 ESA’s Juice spacecraft raced past Earth on September 28, using our planet’s gravity to dramatically reshape its path toward Jupiter without burning much fuel. The flyby changed its direction by 20 degrees and increased its speed by 3.5 km/s, while also giving scientists a rare chance to test its instruments on Earth and the Moon. Chang’e-6 lunar soil contains a surprising magnetic time capsule16:07 Scientists studying Chang’e-6 lunar soil have discovered a previously unknown magnetic mineral in natural Moon samples: a form of metallic iron called γ-Fe. Found inside tiny impact-glass particles, the nanoscale iron can preserve a stable magnetic signal, potentially acting like a microscopic fossil of the Moon’s long-lost magnetic field. Powerful simulations reveal how the first stars changed the universe16:07 Ultra-detailed simulations are showing how the first stars lit up the dark Universe and seeded space with elements such as carbon, oxygen, and iron. The MEGATRON project could bridge JWST observations of the earliest galaxies with chemical clues preserved in ancient stars today. NASA’s Roman telescope just opened its planet-hunting eye15:02 NASA’s Roman Space Telescope has demonstrated remarkable pointing stability and given its powerful planet-imaging coronagraph its first look at the cosmos. The telescope can already stay locked on a target with precision comparable to aiming a laser at a dime from about 150 miles away. Its coronagraph also captured stars in the Large Magellanic Cloud, confirming that the instrument can produce fo… Scientists find an “earthquake gate” as California fault stress hits a 1,000-year high15:02 Researchers say stress on Southern California’s San Andreas and San Jacinto faults has reached some of the highest levels seen in a 1,000-year simulation. Because both faults are highly stressed at the same time, the Cajon Pass junction may be increasingly primed for a rupture that could cross both systems, although the study does not predict when an earthquake will happen. Leucine does more than build muscle. It powers up your cells15:02 The essential amino acid leucine can boost cellular energy production by protecting key proteins on mitochondria from being destroyed. The discovery reveals a new connection between nutrition and metabolism that could eventually lead to new approaches for metabolic disorders and cancer. Your gut may be making a molecule that raises Alzheimer’s risk15:02 Scientists have linked a gut bacterial compound called ImP to greater Alzheimer’s risk, harmful brain protein buildup, and faster cognitive decline. The finding raises the possibility that reducing ImP in the blood could one day help slow or prevent dementia. Scientists just made a superconductor stronger using “empty space”15:02 Researchers have demonstrated that quantum fluctuations in supposedly empty space can strengthen superconductivity, raising the transition temperature of an ultrathin material by as much as 5.4%. The discovery opens the possibility of using specially engineered vacuum environments to control quantum materials without direct contact or external driving. Vitamin C linked to fewer deaths in blood disorder trial15:02 Vitamin C may do more than support the immune system. In a phase 2 trial of people with precancerous or low risk blood cancers, daily vitamin C did not slow abnormal cell growth, but it was linked to favorable changes in inflammation and fewer serious complications. An exploratory follow up also found fewer deaths among participants taking vitamin C than among those receiving placebo. Scientists just pushed superconductors beyond their usual current limit15:02 Ultrashort electrical pulses allowed scientists to push superconductors closer than ever to the point where their electron pairs actually break apart. The method revealed hidden differences between superconducting materials and could open new ways to probe and control their quantum behavior. Nearly 6 in 10 people with high blood pressure don’t know they have it15:02 Nearly 6 in 10 people with high blood pressure in a large England study had never been diagnosed or treated, and half of those already taking medication still had elevated readings. Researchers say a more proactive approach to finding and controlling hypertension could prevent thousands of heart attacks and strokes. The early universe wasn’t nearly as pristine as scientists thought15:02 JWST has revealed that galaxies were spreading carbon, oxygen, and other heavy elements through space just 500 million years after the Big Bang. The surprising discovery suggests the young universe became chemically enriched much earlier than expected, potentially erasing traces of its very first stars. 97-million-year-old fossils reveal the earliest known animal “GPS”15:02 Mysterious 97-million-year-old magnetic fossils may be the oldest evidence of an animal using Earth’s magnetic field like a built-in GPS. Their sophisticated magnetic structure could have helped an unknown ocean creature navigate thousands of kilometers with surprising precision. Weak sunlight can still damage your DNA, scientists warn15:02 Weak sunlight can still damage skin DNA if you spend enough time outdoors, according to a landmark Australian study. Even UV doses too low to cause visible redness triggered cellular damage that could accumulate over time and contribute to skin cancer risk. |