A team of computer scientists at UC Riverside has developed a method to erase private and copyrighted data from artificial intelligence models—without needing access to the original training data. The innovation compels AI models to “forget” selected information while maintaining the models’ functionality with the remaining data. It’s a significant advancement that can amend models without having to re-make them with the voluminous original training data, which is costly and energy-intensive.

CU Boulder aerospace engineer Morteza Lahijanian is creating new algorithms that help robots complete tasks while keeping the humans in their midst safer.

A landmark review traces 40 years of changes in pelagic sargassum – free-floating brown seaweed that plays a vital role in the Atlantic Ocean ecosystem. The review takes a deep dive into the changing story of sargassum – how it’s growing, what’s fueling that growth, and why we’re seeing such a dramatic increase in biomass across the North Atlantic. By examining shifts in its nutrient composition – particularly nitrogen, phosphorus and carbon – and how those elements vary over time and space, we’re beginning to understand the larger environmental forces at play.

On Aug. 28, scientists from Washington and Lee University, the National Park Service and the University of Wyoming published research in Science magazine shedding new light on the value of bison recovery efforts in Yellowstone National Park. Bill Hamilton, John T. Perry Jr. Professor in Research Science at Washington and Lee University, and Chris Geremia, a researcher with the National Park Service at Yellowstone, served as co-first authors, with co-author Jerod Merkle, associate professor and Knobloch Professor in Migration Ecology and Conservation at the University of Wyoming. The research team’s study suggests that bison speed up the nitrogen cycle as they graze; the plants grow as much as they would if they weren’t grazed but, strikingly, are 150% more nutritious.