Science Ask Us Anything The most eco-friendly burial option isn't cremation or human composting With more options than ever, we break down which one's best for the planet. Cemeteries are increasingly running out of space. Are there greener options we ought to turn to? Breakthroughs, discoveries, and DIY tips sent six days a week. Perhaps one of life's hardest tasks is deciding what to do with a loved one's--or even your own--bodily remains. Do you go the cremation route? If you want your last act on Earth to also be good for the Earth, what do you do?

Subset Selection (MISS) problem, which aims to identify a subset of training samples with the greatest collective influence.

Safety and trustworthiness are indispensable requirements for real-world applications of AI systems using large language models (LLMs).

Is the Rat War Over? In New York, a rat czar and new methods have brought down complaints. We may even be ready to appreciate the creatures. Rats were leaving Manhattan, hurrying across the bridges in single-file lines. Some went to Westchester, some to Brooklyn. It was the pandemic, and the rats, which had been living off the nourishing trash of New York's densest borough for generations, were as panicked about the closure of restaurants as we were. People were eating three meals a day at home, and the rats were hungry. At least that was the story going around.

Visual Question Answering (VQA) is an important task in multimodal AI, and it is often used to test the ability of vision-language models to understand and reason on knowledge present in both visual and textual data.

Thousands of Companies Are Driving China's AI Boom. How the Cyberspace Administration of China inadvertently made a guide to the country's homegrown AI revolution. When DeepSeek burst onto the global stage in January 2025, it seemed to appear out of nowhere. But the large language model was just one of the thousands of generative AI tools that have been released in China since 2023--and there's a public archive of every single one of them. Here are 23 ways China is rewiring the future .

If you want to put people back on the moon, don't gut the agency in charge of getting them there. The senator wanted a promise. For the last six years--or maybe the last decade or quarter century, depending on how you count it--the United States and China had been locked in a space race, a contest to see which nation could put its people on the moon . Senator Ted Cruz wanted President Donald Trump's nominee to run NASA, Jared Isaacman, to pledge that the US would not lose. Cruz brought a little surprise to Isaacman's confirmation hearing last April. It was a poster of the moon. On one side stood three astronauts and a giant Chinese flag. On the other were two more figures in space suits, with the tiniest Stars and Stripes planted in the lunar soil . Cruz apologized for the imbalance. "My team used ChatGPT," explained the senator, who chairs the committee that oversees NASA. Then Cruz, with a bit more seriousness, asked Isaacman, "Do we have your commitment that you will not allow the scenario on the right of this poster to happen? That China will not beat us to the moon?" Isaacman, a billionaire entrepreneur who had paid for his own missions to space, replied, "Senator, I only see the left-hand portion of that poster."

Breakthroughs, discoveries, and DIY tips sent every weekday. It's been found in ancient human feces . The U.S. government stored 6.4 metric tons of it in mountains . And a big hunk of it played a major role in a presidential farewell party . While too much of the popular dairy product can spell tummy troubles and high cholesterol for some, new research suggests that eating more high-fat cheese and cream could be linked to a lower risk of developing dementia .

We present a rigorous information-geometric framework, grounded in diffusion dynamics, to quantify hallucinations in MLLMs where model outputs are embedded via spectral decompositions of multimodal graph Laplacians, and their gaps to a truth manifold define a semantic distortion metric. We derive Courant-Fischer bounds on a temperature-dependent hallucination profile and use RKHS eigen-modes to obtain modality-aware, interpretable measures that track evolution over prompts and time.