Sam's News — science — 2026-09-17¶
Climate¶
8 UN warns global water cycle becoming increasingly unpredictable amid climate change¶
The United Nations reports that the planet's water cycle is growing erratic, oscillating between drought and excess conditions, with El Niño expected to intensify the trend.
Sources: Phys.org RSS
8 El Niño and climate change pushing Amazon rainforest toward critical tipping point¶
Research indicates that El Niño, combined with climate change and crime, is driving the Amazon rainforest toward an irreversible global tipping point.
Sources: Live Science RSS
Climate Change¶
8 Global Rivers Hit Near 35-Year Low Water Levels in 2025¶
Global rivers experienced one of their driest years in over three decades in 2025, according to the World Meteorological Organisation. Global freshwater reserves fell to 42% below normal levels, with only one-third of rivers flowing normally and the last seven years showing the fewest normal-flow rivers since 1991.
- Global freshwater reserves depleted to 42% below normal
- Only one-third of rivers flowing at normal levels
- 36% of global river basin area experienced below-normal flows
- Last seven years (2019–2025) had fewest normal-flow rivers since 1991
- Climate impacts driving erratic water cycle with swings between excessive water and severe droughts
Sources: The Guardian AI Web Searched, The Guardian — Climate Crisis RSS, Phys.org RSS
Physics¶
8 Stanford team directly observes quantum jumps of sound for first time¶
Researchers at Stanford have documented the first direct observation of quantum jumps in a mechanical resonator, a century-old physics goal.
Sources: Phys.org RSS
Policy¶
8 Trump administration eliminates incidental kill protections under Endangered Species Act¶
The president of the United States administration announced it will no longer treat the unintentional killing of protected wildlife as unlawful, effectively weakening Endangered Species Act enforcement.
Sources: Phys.org RSS
Neuroscience¶
7.5 Axons may naturally resemble strings of pearls, overturning century-old textbook depiction¶
Johns Hopkins researchers discovered that axons naturally feature pearl-like structures (non-synaptic varicosities) rather than smooth tubes as shown in textbooks for over a century. These repeating bulges influence electrical signal transmission and brain cell signaling.
- Study published Nature Neuroscience, December 2, 2024
- Lead researcher: Shigeki Watanabe, Johns Hopkins associate professor
- Pearl-like structures documented in mouse neurons and human brain tissue
- Non-synaptic varicosities distinct from larger synaptic varicosities at neurotransmitter sites
- Structures influence electrical signal travel; part of normal architecture, not damage
Sources: ScienceDaily AI Web Searched, ScienceDaily — Health RSS
Astrophysics¶
7.5 Black holes from stellar to supermassive scale may follow universal jet-launching rule¶
Astrophysicists discovered a universal rule governing how black holes of all sizes launch jets, published in Nature Astronomy.
Sources: Phys.org RSS
Space¶
7.5 Astronomers confirm youngest exoplanet ever discovered, less than one million years old¶
Astronomers have confirmed a large exoplanet forming in debris around a young star that is less than one million years old, making it the youngest exoplanet yet discovered.
Sources: Live Science RSS Update to: Astronomers confirm Elias 2-24 b as youngest known planet at less than one million years old
AI & Healthcare¶
7.5 Stanford spinout launches AI-powered virtual biotech company with 37,000 AI scientist agents¶
A Stanford Medicine laboratory has launched a virtual biotech company staffed entirely by AI agents working on drug discovery without physical infrastructure or human employees.
Sources: Phys.org RSS
Science¶
7.5 Direct observation reveals defects locking electrons into stable Wigner solids¶
Lawrence Berkeley National Laboratory researchers directly visualized how defects in semiconductors stabilize electrons into ordered Wigner solid states.
Sources: Phys.org RSS