Environment
Why the Arctic Is Warming and Losing Summer Sea Ice
Arctic sea ice is shrinking as warming exposes more ocean water. Understand the dated 2020 minimum, the causes of ice loss, and what an ice-free summer projection actually means.
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Environment
6 Environmental Pressures Illustrated by These Photos
These photos introduce six environmental problems, from plastic litter and polluted air to damaged seabeds and shrinking wildlife habitats, with ways to reduce their impact.
Environment
Air Pollution and Mental Health: What a London Study Found
A London study linked higher pollution exposure with greater odds of common mental-health symptoms. Here is what the findings mean, their limits, and how to use air-quality guidance.
Environment
Greenland Glacier Ice Loss: What a Century of Records Shows
Historical records of three major Greenland glaciers show their contribution to sea-level rise and why future ice-loss projections remain uncertain.
Environment
What Is PM2.5? Health Risks and Ways to Reduce Exposure
PM2.5 consists of fine airborne particles that can reach deep into the lungs. Understand the health risks, how respirators and filters help, and ways to protect children.
Environment
GACW Air Suspension Wheel: How the Tire-Free Design Works
GACW replaces a conventional tire with a steel wheel and in-wheel suspension. See how the design works, its mining focus, and which performance claims need supporting evidence.
Environment
How Biochar Could Help Cities Manage Waste, Water and Carbon
Biochar can turn suitable organic residues into a material for soils, construction and water treatment. Its benefits depend on feedstock quality, processing and the intended application.
Discover nature
Nitrogen Limits May Reduce the CO₂ Growth Benefit Predicted by Climate Models
A PNAS study found that some Earth system models overestimate natural nitrogen fixation. That can exaggerate how much extra plant growth rising CO₂ will support.
Discover nature
Can Trees 'Explode' in Extreme Cold? Frost Cracks Explained
A tree trunk can split suddenly with a loud report in very cold weather. The phenomenon is frost cracking, and it is not a forecast that trees will burst apart at a fixed temperature.
Space Science
Webb Finds a Supernova From When the Universe Was 730 Million Years Old
Observations of GRB 250314A revealed a very early stellar explosion and its faint host galaxy. The signal resembles a nearby GRB supernova, with follow-up needed to separate the light more precisely.
Space Science
Quasar Study Suggests the X-ray–Ultraviolet Relation Changes Over Time
A large quasar analysis found mild evolution in the link between disk and corona emission. The result could affect models of accretion and quasar-based distance estimates.
Space Science
Are We Living Inside a Black Hole? What the Hypothesis Means
Some speculative models connect the origin of the universe with black holes. Similar mathematics and horizons are not evidence that our universe is inside one.
Space Science
128 Newly Confirmed Saturn Moons and a New Uranus Moon Expand the Solar System Catalog
The 2025 discoveries added small irregular moons around Saturn and S/2025 U1 around Uranus. Different observing techniques reveal different parts of these satellite systems.
Space Science
Can Extra-Dimensional Geometry Explain Particle Mass? A Theoretical Proposal
A G₂-Ricci-flow model links geometric torsion to W and Z boson masses. It is a mathematical proposal that must account for existing Higgs evidence and produce testable predictions.
Space Science
How Young Stars Carve Gas Bubbles in the N159 Nebula
Hubble's view of N159 shows how radiation and stellar winds from young stars reshape a vast star-forming cloud in the Large Magellanic Cloud.
Space Science
Webb Finds an Unusual Carbon-Rich Atmosphere on PSR J2322-2650b
Webb observations reveal molecular carbon around a Jupiter-mass pulsar companion. Its stretched shape is unusual, but diamonds inside it remain unconfirmed.
Space Science
Radio Images Reveal Restarted Black Hole Jets in J1007+3540
Bright inner jets and older radio lobes reveal repeated activity in J1007+3540, while surrounding cluster gas bends and compresses its plasma.
Space Science
Why Jupiter and Saturn Have Different Polar Vortex Patterns
A fluid-dynamics model links the planets' contrasting polar storms to conditions beneath them, offering clues to atmospheric stratification rather than direct measurements of their cores.
Health Care
Microplastics and Brain Health: What the Research Does and Does Not Show
A research review outlines possible neurological effects of microplastics, but human studies have not established that exposure causes Alzheimer's or Parkinson's disease.
Health Care
Coffee and Telomere Length: What an Aging Study Found
A study in adults with severe mental disorders linked moderate coffee intake with longer telomeres, but it did not show that coffee reverses aging or extends life.