Teens have access to vastly more potent cannabis than their parents had at their age. Parents need to understand the risks, including psychosis

A breakthrough in Hilbert’s sixth problem is a major step in grounding physics in math

The brain’s response to information depends on language’s grammatical structure

The owners of a controversial mining license have begun extracting valuable metals from the ocean floor

Scientists are racing to stop a tiny mite that could devastate the pollinators and agriculture

Biologists now think there is a larger spectrum than just binary female and male