Science
Correlation vs. Causation: How to Tell the Difference
Understand correlation, causation, confounding and reverse causality with clear examples and a practical checklist for evaluating claims.
Sep 12, 2026 • 7 min readOBSERVE · TEST · EXPLAIN
Science
Explore scientific questions, experiments and discoveries, with explanations of the evidence and methods behind what researchers conclude.
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.
Research Breakthroughs
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…
Sep 12, 2026 • 8 min read
Research Breakthroughs
What Is Peer Review—and What Can It Actually Tell Us?
Learn what scientific peer review checks, how journal review works, what reviewers can miss and why peer-reviewed does not mean proven.
Sep 12, 2026 • 7 min read
Physics
The Strange Physics Behind Why Time Moves Differently
Learn why speed and gravity change elapsed time, how atomic clocks test relativity and why GPS depends on Einstein’s physics.
Sep 12, 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