News

An inside look at how Sweden is building the world’s second-longest tunnel

Technology is transforming the relationship between people and the oceans

AI Has a Hallucination Problem That’s Proving Tough to Fix

MIT embarks on ambitious plan to build nuclear fusion plant by 2033

Contact lenses that deliver drugs directly to the eye win health care prize

Drone crashes in Arizona National Forest, starts a wildfire

Drone use and wilderness areas have been in conflict in recent years. Drones have grounded fire-fighting planes and helicopters, which usually fly low to the forest. Having a drone come in contact with propellers could endanger a firefighter’s life.

There Is Liquid Water Over 400 Miles Below Earth’s Surface

Waymo self-driving trucks are hauling gear for Google data centers

Found trapped in a diamond: a type of ice not known on Earth

Our dreams have many purposes, changing across the lifespan

Dreams differ not only across a single lifetime or a single night, they also differ dramatically across historical epochs. The dreams of the ancient Greeks and Romans, and indeed the dreams of most peoples of the ancient world, were viewed as direct portals into the spirit world and the realm of the ancestors and gods. Ancient peoples (and traditional peoples even today) often experienced dreams as the place to conduct a transaction with a spirit being who could significantly help or hinder you in your daily affairs.