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As humans get older, their brains undergo various changes that can affect mental functions. The cells known to be affected by aging include microglia, the primary immune cells in the brain and spinal cord, which help eliminate ...

As a kid growing up in North Carolina, Prakash Mishra was interested in planets. "My parents got me a telescope when I turned 6 or 7, and that was my personality for probably 10 years," he says, noting that he thought he ...

Some female animals living in groups raise offspring that are not their own, sometimes without reproducing themselves. While the behavior of cooperatively breeding species is well documented, some aspects remain poorly understood.

Artificial intelligence systems, particularly those powered by large language models and designed to communicate with users on a one-to-one basis, are increasingly used worldwide. Some of these systems, such as Replika, are ...

A robot meant to inspect a coastline, a flooded street or a wetland can't count on one kind of ground. It might need to crawl over a hard surface, climb a bank, scale a curb or a step, then slide into open water, often within ...

One evening in August 2025, a Pakistani shepherd, Abuzar Hussain, was tending sheep and goats on the mountain slopes of Shijar. At about 6 p.m., a thunderous roar shattered the silence of the valley.

Legislation that affects or discriminates against transgender and gender-diverse individuals can cause more psychological distress than personal experiences of discrimination, according to new Virginia Commonwealth University ...

The biopolymer lignin—one of the most important carbon reservoirs in plants and soils—not only decays through fungi or bacteria but can also be chemically attacked by iron linked to reactive oxygen species, without the involvement ...

Gut instinct, gut feeling or gutting it out—what exactly is the human gut? It's the workhorse of the digestive system and home to a vast, dynamic community of microorganisms that influence human health. In fact, the human ...

Artificial intelligence programs used to classify images could be trained much more cheaply using a surprisingly simple method inspired by the childhood game of 20 Questions, according to new research posted to the arXiv ...

Dwarf galaxies—with a mass equal to about a billion suns, but often considerably less—are the most abundant in the universe. However, because of their low luminosity, they are very difficult to detect. They have mostly been ...

One of the biggest challenges in cancer immunotherapy may not be that immune cells are too weak, but that some tumors give them too little to see. New research from Dana-Farber Cancer Institute scientists reveals how cancers ...