A clinical trial tested strategies for boosting teens' and young adults' use of HIV-prevention drugs called PrEP.
Reference Google Earth and satellite imagery has revealed some strange things, from secret military bunkers in China to phantom islands to a mysterious pentagram in Kazakhstan.
A new solution to Albert Einstein's theory of general relativity suggests hypothetical gravitational stars that look like black holes could be nested within one another.
An NIH study many years in the making starts to unravel the biology of a misunderstood disease called ME/CFS.
The Levoit Core 600S air purifier gets our seal of approval for its intelligent sensors and excellent performance.
The Mary River turtle has adapted to life underwater after splitting from all other living turtle lineages more than 18 million years ago.
We're getting an extra day on Feb. 29. But why do we need leap years and how did they come about?
People with psychopathic traits often struggle with emotional empathy, but they're usually adept at cognitive empathy and can use this to manipulate people.
Decimal points are at least 150 years older than historians thought, according to newly unearthed notes from Venetian merchant Giovanni Bianchini, who practiced astrology in the 1440s.
Reference Relativity is one of the most famous scientific theories of the 20th century, but how well does it explain the things we see in our daily lives?
We finally understand why blueberries are blue — and the secret lies not in the flesh or skin, but the waxy coating around it.
The reason for copper's unique properties comes down to the configuration of its electrons.
Qubits are normally made from superconducting metals and need to be cooled to near absolute zero to avoid collapsing. But scientists just built an error-free "logical qubit" from a single laser pulse — and it works at room temperature.
Boston Dynamics has released footage showing how its flagship Atlas humanoid robot would cope in a factory environment as it lifts heavy struts and puts them into a flow cart.