Copper IUDs (intrauterine devices) are a safe and effective type of birth control. It works by preventing sperm from fertilizing any eggs. Learn more about how to determine whether it’s right ...

A historic ice core recently drilled from deep beneath the Antarctic surface by the Beyond EPICA - Oldest Ice project. Credit: Scoto © / PNRA / IPEV At an extremely ...

An illustration of a magnifying glass. An illustration of a magnifying glass.

KoBold Metals closed a $537 million Series C round on Wednesday to help build a multi-billion-dollar mine to exploit a copper deposit it found using AI. The new funding round, which was led by ...