This is a series about the mysteries of internet speak. The choppelganger feeds ducks. She finds most romantic comedies to be choppelganger.

The result is Humanity’s Last Exam (HLE). The dramatically titled test is 2,500 questions, crowdsourced from more than 1,000 ...

OpenAI’s new Codex Mac app passed 1 million downloads in a week, spotlighting rising demand for agentic coding tools and tighter free-tier limits.

A metabolism test provides a snapshot of certain hormone levels to understand how your body converts calories into the energy that fuels every physical, biological, and mental activity. These tests ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Colleen Hagerty Colleen Hagerty is a writer focused on emergency preparedness.

The Avant STAMP (Standards-Based Measurement of Proficiency) is an internationally recognized computer-based test of language proficiency. It tests all 4 skills: Reading, Writing, Listening, and ...

Psychology Today's online self-tests are intended for informational purposes only and are not diagnostic tools. Psychology Today does not capture or store personally identifiable information, and your ...

You have two carotid arteries in your neck that are responsible for supplying oxygen-rich blood to your head and brain. Like all arteries, carotid arteries are made up of three layers: An outer ...

Ask any new parent: Diapers are a big part of life with a baby. The American Academy of Pediatrics estimates that the average baby goes through as many as 8 to 12 diapers per day, or about 3,000 ...