Discovery of the Week

Psilocybin, the psychedelic compound in magic mushrooms, may prevent a common and debilitating chemotherapy side effect: nerve damage that causes numbness, tingling and pain in the hands and feet. In mice, the compound appeared to shield nerves from toxicity caused by widely used cancer drugs, a finding that could one day help patients finish treatment without lasting pain. The results are early, but the need is urgent — peripheral neuropathy (nerve injury outside the brain and spinal cord) often forces patients to reduce or stop chemo. (New Scientist) (Science Magazine News)

Space Missions & Astronomy

• Roman Space Telescope is on its way — NASA's new "great observatory" launched Aug. 30 and is now on a three-month, million-mile journey to its final orbit, where it will probe the dark energy driving the universe's expansion and capture staggeringly wide views of the cosmos. _Significance: High._ (Ars Technica) (NASA News)

• A fresh explanation for JWST's oversized ancient black holes — The James Webb Space Telescope has found more black holes in the early universe than theory expected, and researchers now propose that "not-quite primordial" black holes — born from dense pockets of matter in the infant cosmos rather than from collapsing stars — could grow quickly enough to fit the observations. _Significance: High._ (New Scientist)

• Hubble tracks a giant ten-sided wave around Saturn's south pole — A huge, evolving decagon-shaped atmospheric wave is encircling the planet's south pole, giving scientists a live look at how gas giants churn. _Significance: Medium._ (NASA News)

• New Horizons may shut down two instruments over funding — NASA's Pluto probe, now exploring the solar system's far frontier, could lose two science instruments because of budget shortfalls, a move scientists warn risks "incalculable loss" of unique data from the edge of the Sun's influence. _Significance: Medium._ (Science Magazine News)

• A Chinese rocket stage broke up in low-Earth orbit — This week's launch-industry roundup noted a Long March 6C breakup in orbit, adding debris to an already crowded region of space. _Significance: Medium._ (Ars Technica)

Life Sciences & Medicine

• Doubling an entire genome is a radical evolutionary gamble — When an organism copies its complete set of genetic instructions — an event called whole-genome duplication — it can evolve at breakneck speed or collapse entirely; new studies reveal what determines which path it takes. _Significance: Medium._ (Quanta Magazine)

• GLP-1 drugs show promise for slowing ageing in mice — The same class of medicines used for diabetes and weight loss extended healthy lifespan in animal studies, adding evidence that these drugs do more than control appetite and blood sugar. _Significance: Medium._ (Nature News)

• Huge study ties personality traits to specific genetic variants — A sweeping genetic analysis linked the "Big Five" traits — openness, conscientiousness, extraversion, agreeableness and neuroticism — to inherited DNA differences, a step toward understanding the biology of temperament. _Significance: Medium._ (Nature News)

Physics & Materials

• An antimatter "tag" catches an elusive particle decay — Physicists used a labeling technique based on antimatter particles to detect an extremely rare decay process, giving them a sharper test of the standard model of particle physics. _Significance: Medium._ (Nature News)

• Raindrops are tiny lightning bolts that corrode metal — New research shows that the miniature electrical discharges produced when water droplets split or land can damage surfaces — an overlooked way that rain eats away at everything from cars to infrastructure. _Significance: Medium._ (Ars Technica)

Climate & Earth Science

• El Niño is now stronger than at any point in 1,000 years — The periodic warming of the tropical Pacific that reshapes weather worldwide has intensified beyond anything seen in the past millennium, a finding researchers call one more warning sign of a warming world. _Significance: High._ (Ars Technica)

• The UN now admits warming will blow past the 1.5°C limit — The international body acknowledged that global temperatures will exceed the Paris Agreement's most ambitious goal, a landmark concession with major implications for climate policy. _Significance: High._ (Nature News)

• Wildfire risk spreads to new corners of Europe — Scorching conditions this year ignited blazes in countries normally considered damp and cool, showing how rapidly climate change is redrawing the wildfire map. _Significance: Medium._ (New Scientist)

• Shifting pollution patterns help explain methane's stubborn plateau — New research finds that rising nitrogen-oxide emissions, and their southward drift, are altering the atmospheric chemistry that would otherwise scrub methane (a potent greenhouse gas) from the air. _Significance: Medium._ (Nature News)

Technology-Driven Science

• AI designs physics experiments from scratch — Researchers demonstrated that a machine-learning system can plan real experiments, hinting that AI's role in science may extend far beyond analyzing data to proposing what to measure in the first place. _Significance: High._ (Nature News)

• Mutating every DNA letter exposes AI's limits — Scientists systematically altered each position in a genome and found that AI predictions of the consequences fall short, underscoring both the power and the blind spots of computational biology. _Significance: Medium._ (Nature News)

Upcoming: Launches & Publication Dates

• Progress 96 cargo launch (Sept. 9) — An unpiloted Roscosmos resupply spacecraft carrying about three tons of food, fuel and supplies is scheduled to lift off at 12:15 p.m. EDT Wednesday, Sept. 9, with NASA providing live coverage of launch and docking to the International Space Station. (NASA News)