Democratic lawmakers compared ICE agents to Nazis and Gestapo during a House committee hearing, as Rep. Dan Goldman pressed acting director Todd Lyons.

Age Verification Is Reaching a Global Tipping Point. Is TikTok's Strategy a Good Compromise? TikTok's new age-detection tech seems like a better solution than automatically banning youth accounts. But experts say it still requires social platforms to surveil users more closely. Governments worldwide are moving to limit children's access to social media as lawmakers question whether platforms are capable of enforcing their own minimum age requirements.

Scientists Thought Parkinson's Was in Our Genes. New ideas about chronic illness could revolutionize treatment, if we take the research seriously. Amy Lindberg spent 26 years in the Navy and she still walked like it--with intention, like her chin had someplace to be. But around 2017, her right foot stopped following orders. Lindberg and her husband Brad were five years into their retirement. After moving 10 times for Uncle Sam, they'd bought their dream house near the North Carolina coast. They had a backyard that spilled out onto wetlands. From the kitchen, you could see cranes hunting. They kept bees and played pickleball and watched their children grow. But now Lindberg's right foot was out of rhythm. She worked hard to ignore it, but she couldn't disregard the tremors.

Food Does the Grocery Cart Actually Need a Makeover? The rolling basket we dump our food in hasn't changed much in almost a century, and for good reason--it works. But meddling tech gurus think they know better. In the past few decades there have been numerous incremental changes to grocery stores, like the crazed proliferation of snacks and frozen food, security cameras tracking anything that moves, and self-checkout robots flashing in panic because they can't detect your Twix bar in the bag. Carts remain the open-ceiling prison cells on wheels they were 50 years ago, and baskets don't look much different either.

Elongate animals and robots use undulatory body waves to locomote through diverse environments. Geometric mechanics provides a framework to model and optimize such systems in highly damped environments, connecting a prescribed shape change pattern (gait) with locomotion displacement. However, the practical applicability of controlling compliant physical robots remains to be demonstrated. In this work, we develop a framework based on geometric mechanics to predict locomotor performance and search for optimal swimming strategies of compliant swimmers. We introduce a compliant extension of Purcell's three-link swimmer by incorporating series-connected springs at the joints. Body dynamics are derived using resistive force theory. Geometric mechanics is incorporated into movement prediction and into an optimization framework that identifies strategies for controlling compliant swimmers to achieve maximal displacement. We validate our framework on a physical cable-driven three-link limbless robot and demonstrate accurate prediction and optimization of locomotor performance under varied programmed, state-dependent compliance in a granular medium. Our results establish a systematic, physics-based approach for modeling and controlling compliant swimming locomotion, highlighting compliance as a design feature that can be exploited for robust movement in both homogeneous and heterogeneous environments.

Elongate limbless robots have the potential to locomote through tightly packed spaces for applications such as search-and-rescue and industrial inspections. The capability to effectively and robustly maneuver elongate limbless robots is crucial to realize such potential. However, there has been limited research on turning strategies for such systems. To achieve effective and robust turning performance in cluttered spaces, we take inspiration from a microscopic nematode, C. elegans, which exhibits remarkable maneuverability in rheologically complex environments partially because of its ability to perform omega turns. Despite recent efforts to analyze omega turn kinematics, it remains unknown if there exists a wave equation sufficient to prescribe an omega turn, let alone its reconstruction on robot platforms. Here, using a comparative theory-biology approach, we prescribe the omega turn as a superposition of two traveling waves. With wave equations as a guideline, we design a controller for limbless robots enabling robust and effective turning behaviors in lab and cluttered field environments. Finally, we show that such omega turn controllers can also generalize to elongate multi-legged robots, demonstrating an alternative effective body-driven turning strategy for elongate robots, with and without limbs.

Robotic spacecraft have helped expand our reach for many planetary exploration missions. Most ground mobile planetary exploration robots use wheeled or modified wheeled platforms. Although extraordinarily successful at completing intended mission goals, because of the limitations of wheeled locomotion, they have been largely limited to benign, solid terrain and avoided extreme terrain with loose soil/sand and large rocks. Unfortunately, such challenging terrain is often scientifically interesting for planetary geology. Although many animals traverse such terrain at ease, robots have not matched their performance and robustness. This is in major part due to a lack of fundamental understanding of how effective locomotion can be generated from controlled interaction with complex terrain on the same level of flight aerodynamics and underwater vehicle hydrodynamics. Early fundamental understanding of legged and limbless locomotor-ground interaction has already enabled stable and efficient bio-inspired robot locomotion on relatively flat ground with small obstacles. Recent progress in the new field of terradynamics of locomotor-terrain interaction begins to reveal the principles of bio-inspired locomotion on loose soil/sand and over large obstacles. Multi-legged and limbless platforms using terradynamics insights hold the promise for serving as robust alternative platforms for traversing extreme extraterrestrial terrain and expanding our reach in planetary exploration.

Kurt Knutsson talks about a soft, vine-like robot called Sprout that aids safe survivor rescues in collapsed buildings. A Parisian restaurant once promised a pizza experience unlike any other. Order your pizza and, within five minutes, a robot would craft your pie from scratch, no human hands required. This was the vision of Pazzi Robotics, a French startup that merged advanced automation with Italian culinary tradition. For a time, the company seemed poised to redefine how people view pizza.

We report in experiment and simulation the spontaneous formation of dynamically bound pairs of shape changing robots undergoing locally repulsive collisions. These physical `gliders' robustly emerge from an ensemble of individually undulating three-link two-motor robots and can remain bound for hundreds of undulations and travel for multiple robot dimensions. Gliders occur in two distinct binding symmetries and form over a wide range of angular oscillation extent. This parameter sets the maximal concavity which influences formation probability and translation characteristics. Analysis of dynamics in simulation reveals the mechanism of effective dynamical attraction -- a result of the emergent interplay of appropriately oriented and timed repulsive interactions. Tactile sensing stabilizes the short-lived conformation via concavity modulation.

Energy Secretary Chris Wright discusses the economic impact of lowering energy prices, why energy is essential for artificial intelligence dominance, American LNG exports and possible U.S. operation of Ukrainian nuclear plants. Six House Democrats broke from their party on Thursday to pass a pair of bills blocking Biden administration-era green energy rules. One resolution, led by Rep. Stephanie Bice, R-Okla., seeks to overturn regulations imposed by former President Joe Biden's Department of Energy (DOE) for new clean energy standards targeting walk-in freezers and coolers. Biden speaks during the United Auto Workers union conference at the Marriott Marquis in Washington on Jan. 24, 2024. "I have fought every step of the way to prevent egregious rules from taking effect. These regulations will impose significant financial burdens on small businesses, which will have to absorb major upgrade costs to meet these new, aggressive standards," Bice told Fox News Digital.