For decades, astronomers have wondered what the very first stars in the universe were like. These stars formed new chemical elements, which enriched the universe and allowed the next generations of stars to form the first planets.
The first stars[1] were
Portable air cleaners aimed at curbing indoor spread of infections are rarely tested for how well they protect people – and very few studies evaluate their potentially harmful effects. That’s the upshot of a detailed review[1] of nearly 700 studies that
U.S. state legislatures are where the action is for placing guardrails around artificial intelligence technologies, given the lack of meaningful federal regulation. The resounding defeat in Congress[1] of a proposed moratorium on state-level AI regulation means
Today, approximately 1,800,000 acres[1] of land in the United States is used for landfill waste disposal. In terms of volume, the U.S alone generated over 290 million tons of solid waste[2] in 2018, an amount equivalent to about 235,000 Olympic-size swimming
The Southeastern Pennsylvania Transportation Authority piloted a new enforcement tool[1] in Philadelphia[2] in 2023: AI-powered cameras mounted on seven of its buses. The results were immediate and dramatic: In just 70 days, the cameras flagged over 36,000 cars
During a solar eclipse, astronomers who study heliophysics are able to study the Sun’s corona – its outer atmosphere – in ways they are unable to do at any other time.
The brightest part of the Sun is so bright that it blocks the faint light
Black holes are massive, strange and incredibly powerful astronomical objects. Scientists know that supermassive black holes[1] reside in the centers of most galaxies.
And they understand how certain stars form the comparatively smaller stellar mass black holes