Lionel Messi has retired from international soccer, ending a 20-year Argentina career that included the 2022 World Cup title and a second straight World Cup final this summer. The 39-year-old posted the decision on Instagram on Monday. He said he wrote the note on July 21, two days after Argentina lost the 2026 World Cup…
The Global Positioning System, or GPS, is a constellation of satellites that allows a receiver anywhere on or near Earth’s surface to determine its precise three-dimensional position and exact time. Operated by the United States Space Force and owned by the U.S. government, the system provides continuous, worldwide coverage free of charge for civilian users….
Artificial intelligence is transforming our world, but it comes with a surprising cost. Discover how much water AI really uses, the massive electricity demands of data centers, and the other resources powering modern AI.
Göbekli Tepe stands as one of humanity’s greatest mysteries — a 12,000-year-old temple complex built by hunter-gatherers and deliberately buried beneath the earth. With its towering T-shaped pillars carved with strange and powerful symbols, the site challenges everything we thought we knew about the origins of civilization. Only a fraction has been uncovered. What secrets are still waiting to be revealed?
Technology has changed far more than the devices people use every day. It has changed how information moves, how businesses operate, how healthcare is delivered, how people learn, how work is organized, and how individuals interact with one another. That transformation has produced enormous benefits. Digital technologies can make information easier to access, connect people…
Solid-state batteries are often described as the next major step in battery technology. The basic idea is straightforward: replace the liquid electrolyte used in conventional lithium-ion batteries with a solid material. That change could eventually allow batteries with higher energy density, improved safety, and different designs that are difficult to achieve with today’s lithium-ion technology….
Large language models can answer questions, write articles, generate code and analyze information in seconds. But behind that convenience is a physical infrastructure that consumes electricity, requires cooling and depends on enormous data centers. That has created a growing question around artificial intelligence: How much does using AI actually cost the environment? The answer is…
Blockchain is usually sold as a new kind of trust. The more useful question is smaller: What problem does a chain of signed blocks actually solve, and where does that design stop helping? Bitcoin, launched in 2009, used a public ledger to let people transfer a digital token without relying on a bank to maintain…
Roughly 12,800 years ago, Earth hit a climatic brick wall. The Younger Dryas—a roughly 1,200-year cold reversal that interrupted the post-Ice Age warming—has often been explained through changes in North Atlantic circulation, including freshwater forcing and weakening of the Atlantic Meridional Overturning Circulation (AMOC). But the Younger Dryas Impact Hypothesis offers a radically different possibility:…
Few scientific pursuits carry as much long-term potential as nuclear fusion. Often described as the process that powers the Sun and stars, fusion represents one of humanity’s most ambitious goals: generating large-scale, clean energy by combining light atomic nuclei. While still in the experimental and demonstration phase, fusion research has made encouraging progress in recent…