Sam's News — science — 2026-09-22¶
Climate¶
8 Record El Niño threatens Asian drought and global food price increases¶
A record-breaking El Niño forecast to peak December 2026 is expected to cause severe drought in Asia and extreme weather globally, potentially pushing 49+ million additional people into acute food insecurity by end of 2027.
- UK national weather service calls it potentially 'strongest in living memory'; NOAA estimates 69% chance it will be strongest recorded since 1950
- Expected to cause severe drought in Asia, heat waves, flooding, and wildfires
- May push 49+ million more people into acute food insecurity by end of 2027
- Worst impacts anticipated in Central America and southern Africa; significant effects in eastern Africa and South/Southeast Asia
- Asian governments drawing on reserves to address Iran war ripple effects on energy costs and fertilizer supplies
Sources: Associated Press AI Web Searched, Phys.org RSS
7.5 El Niño weather pattern reaches record intensity¶
El Niño reached record intensity confirmed by NOAA in June 2026, with 75% probability of historic strength October-December 2026 and 63% chance of very strong event November-January. Impacts visible in Central America and Indonesia.
- NOAA Climate Prediction Center: 75% chance El Niño reaches historic strength October-December 2026 (up from 69% in August)
- 63% chance of very strong El Niño November-January ranking among largest events in historical record
- Greater than 90% chance of very strong event fall-winter 2026-27
- Anticipated impacts: drought across Amazon, Indonesia, Australia; disrupted India monsoons; shifting tropical rainfall
- California expected to experience wet, stormy winters with potential strong atmospheric rivers; combination with climate change could push global temperatures to record levels
Sources: Courthouse News Service AI Web Searched, Newsweek AI Web Searched, Phys.org RSS
Health/Neuroscience¶
7.5 Brain dopamine damage identified as cause of long COVID fatigue¶
PET brain imaging at CAMH revealed long COVID damages dopamine-releasing neurons in the striatum, correlating dopamine loss patterns with specific symptoms: motivation loss, movement slowing, and memory difficulties. The finding opens potential treatment strategies targeting the dopamine system.
- Long COVID affects approximately 5% of global population (~2 million people in Canada)
- Lower ventral striatum dopamine linked to loss of motivation
- Dorsal putamen dopamine reduction associated with slower movement
- Caudate putamen dopamine loss connected to memory difficulties
- No current evidence-based treatments exist for long COVID
Sources: ScienceDaily AI Web Searched, ScienceDaily — Health RSS
Conservation¶
7.5 First New Penguin Species Discovered in Over 100 Years¶
Scientists discovered a new penguin species on the Kerguelen Islands using genetic evidence, revealing that a single gentoo species is actually four distinct species. The southeastern gentoo (Pygoscelis kerguelensis) is the first new penguin species named in over 100 years.
- First new penguin species named in over 100 years
- Kerguelen Islands located nearly 2,000 miles from any permanently inhabited landmass
- Genetic evidence revealed four distinct species previously classified as one; three were previously unrecognized subspecies
- Four species: southeastern gentoo (Kerguelen Islands), southern gentoo (Antarctica), and two others in sub-Antarctic regions
- Climate change threatens species; warming oceans could leave several island populations with little suitable habitat by 2050
Sources: ScienceDaily AI Web Searched
Drug Discovery¶
7.5 High-throughput screening reveals novel DNA gyrase inhibitor for antibiotic development¶
Florida International University researchers developed the first high-throughput screening method to identify compounds that inhibit bacterial DNA gyrase, enabling rapid identification of DNA gyrase poisons for new antibiotic candidates.
- First high-throughput screening method to identify DNA gyrase inhibitors
- DNA gyrase is essential bacterial enzyme; compounds that 'poison' it force double-strand breaks in bacterial DNA
- Strategy targets mechanism to overcome antimicrobial resistance
- Screening method enables rapid identification from compound libraries, advancing drug discovery for antibiotics
Sources: Frontiers in Chemical Biology AI Web Searched, Frontiers in Microbiology AI Web Searched, Phys.org RSS
Biomedical Research¶
7 Stem cell transplants restore movement in mice after stroke¶
Researchers at the University of Zurich transplanted human neural stem cells into stroke-damaged brains one week post-stroke, where they survived, differentiated into neurons, regenerated tissue, restored motor function, and improved blood-brain barrier integrity over five weeks.
- Transplanted cells survived and most transformed into neurons communicating with existing brain cells
- Treatment restored motor function and improved blood vessels, inflammation, and blood-brain barrier integrity
- Stroke affects approximately 1 in 4 adults over lifetime, with ~50% experiencing lasting disabilities such as paralysis or speech difficulty
- Study addresses traditionally permanent brain damage with neural stem cell therapy
Sources: ScienceDaily AI Web Searched, ScienceDaily — Health RSS
Space¶
7 Einstein Probe and LHAASO detect 42-light-year X-ray tail linked to pulsar and orphan gamma rays¶
Joint observations from China's Einstein Probe satellite and LHAASO observatory traced a 42-light-year X-ray tail connecting a pulsar to previously unidentified gamma-ray sources, advancing understanding of cosmic ray acceleration.
Sources: Phys.org RSS
Climate/Policy¶
7 Fairness-Based Climate Pathways Preserve Goals While Shifting Emission Cuts¶
IIASA research shows that incorporating fairness principles into climate models informs equitable emissions reduction allocation without altering climate targets.
Sources: Phys.org RSS
Biotechnology¶
7 Circular mRNA boosts microbial protein production sixfold¶
Researchers developed a synthetic biology technique converting linear mRNA into ring-shaped structures in microbial cells, increasing protein output up to six times.
Sources: Phys.org RSS
Space Science¶
7 Jupiter's bow shock revealed as surprisingly complex solar particle defense¶
NASA's Juno mission provides detailed observations of Jupiter's bow shock, showing unexpected complexity and differences from Earth's magnetospheric boundary.
Sources: Phys.org RSS