Everyday Science
Why Does Metal Rust?
Iron rusts when it is oxidized in the presence of water and oxygen. Different regions on the wet surface act like tiny electrochemical cells:…
Oct 6, 2026 • 13 min readOBSERVE · TEST · EXPLAIN
Science
Clear, evidence-led stories about the discoveries changing how we understand reality.
EDITOR’S PICK
How Scientific Discovery Works: Evidence, Testing and Uncertainty
Science advances by turning questions into testable ideas, confronting them with evidence and revising what we think we know. Here is how that process really works—and why uncertainty is a strength, not a flaw.
Sep 12, 2026 • 8 min readRead the discovery →LATEST
Latest discoveries
New stories, explanations and research from Science.
Physics
Why Does Static Electricity Build Up?
Static electricity builds when electrons are transferred or separated between materials faster than the charge can leak away. Rubbing often increases contact and separation,…
Oct 6, 2026 • 13 min read
Chemistry
How Does Soap Remove Grease?
Soap removes grease because each surfactant molecule has a water-attracting head and an oil-attracting tail. The tails associate with grease while the heads remain…
Oct 6, 2026 • 13 min read
Everyday Science
How Does Popcorn Pop?
A popcorn kernel contains water and dense starch sealed inside a hard hull. Heating turns the water into pressurized vapour and softens the starch.…
Oct 6, 2026 • 12 min read
Everyday Science
Why Does Ice Float?
Ice floats because ordinary ice is less dense than liquid water. When water freezes, hydrogen bonds arrange its molecules into an open hexagonal crystal…
Oct 5, 2026 • 13 min read
Chemistry
Why Do Onions Make You Cry?
Cutting an onion ruptures cells and mixes enzymes with sulfur-containing molecules that were stored separately. Alliinase begins the reaction, and lachrymatory-factor synthase helps produce…
Oct 3, 2026 • 13 min read
Medical Science
How the Kidneys Keep Water and Salts in Balance
The kidneys continually filter blood and adjust how much water and dissolved material returns to the body, helping keep internal conditions within workable ranges.
Sep 29, 2026 • 12 min read
Physics
How Do Magnets Work?
Magnets work through the electromagnetic interaction. Moving electric charges and intrinsic properties of electrons create magnetic moments and fields. In permanent magnets, many atomic-scale…
Sep 26, 2026 • 13 min read
Everyday Science
Why Is the Sky Blue?
The sky looks blue because air molecules scatter the shorter wavelengths of visible sunlight more strongly than the longer wavelengths. At sunrise and sunset,…
Sep 23, 2026 • 14 min read
Medical Science
How Immune Memory Recognizes a Returning Pathogen
After some infections or vaccinations, long-lived B and T cells respond more quickly when they encounter familiar molecular features again.
Sep 23, 2026 • 12 min readWORTH KNOWING
Popular & evergreen
Medical Science
How the Immune System Distinguishes Self From Threats
Layered recognition, cellular education and regulatory brakes let immunity respond to danger without routinely attacking the body it protects.
Sep 21, 2026 • 14 min read
Research Breakthroughs
How CRISPR Finds and Edits a DNA Target
A programmable RNA guide, a DNA-recognizing protein and the cell’s own repair systems turn a bacterial defense mechanism into a genome-editing platform.
Sep 19, 2026 • 12 min read
Research Breakthroughs
What Does “Statistically Significant” Really Mean?
Learn what statistical significance and p-values do—and do not—tell you about effect size, uncertainty, practical importance and scientific evidence.
Sep 12, 2026 • 6 min read
Research Breakthroughs
How Scientific Consensus Forms—and Why It Can Change
Discover how scientific consensus emerges from converging evidence, expert scrutiny and replication—and why responsible consensus can change.
Sep 12, 2026 • 6 min read