Fossil evidence shows a case of mistaken big cat identity. Breakthroughs, discoveries, and DIY tips sent six days a week. Present-day Japan may see its fair share of bears, but the islands' big cat populations are long gone. Between 129,000 and 11,700 years ago, temporary land bridges allowed the ancient predators to migrate between mainland Asia and the islands. Paleobiologists have long believed tigers were the primary cats to make this trek, but recently analyzed evidence published in the suggests a different timeline.

Things to Do in L.A. Tap to enable a layout that focuses on the article. Stage 9, also known as the Seinfeld Stage, where the show was produced along Republic Avenue at Radford Studio Center in 2023 in Studio City. Owner Hackman Capital Partners is ceding the 55-acre property to Goldman Sachs. This is read by an automated voice. Please report any issues or inconsistencies here .

Military roads helped the felines domesticate about 2,000 years ago. Breakthroughs, discoveries, and DIY tips sent every weekday. Our pet dogs have been by our side for at least 20,000 years, evolving right along with us. True to their more elusive nature, the timeline of when cats domesticated is more murky. Our homespun feline friends appear to be a more recent arrival in some parts of the world, likely only arriving in Europe about 2,000 years ago.

Things to Do in L.A. Tap to enable a layout that focuses on the article. Santa Monica orders Waymo to stop noisy overnight operations at charging stations. Self-driving vehicles charge at the Waymo station at the corner of Euclid Street and Broadway in Santa Monica. This is read by an automated voice. Please report any issues or inconsistencies here .

Why do cats love boxes? Boxes give cats control, comfort, and prime ambush angles. Even when a box is too small, cats still love them. Breakthroughs, discoveries, and DIY tips sent every weekday. If you've ever purchased an expensive, bespoke toy for your feline friend, then watched them ignore said purchase in favor of the cardboard container it arrived in, you will know this universal truth: cats love boxes.

Environment Animals Wildlife Bats This tiny bat is one of the world's deadliest hunters Lions wish they killed this well. Breakthroughs, discoveries, and DIY tips sent every weekday. The lion is an undisputed contender for the planet's most iconic predator, but a new study indicates there is an underdog contender coming for its top spot. They're also often more successful at getting the job done. The proof is laid out in a study appropriately published on October 31 in the journal .

What the science says about milk, sleep, and if your cat really loves you. Breakthroughs, discoveries, and DIY tips sent every weekday. Cats are man's best friend--never mind that other animal species. Jokes aside, humans and cats have lived together for thousands of years but not nearly as long as humans and dogs . It makes sense, then, that we don't always understand cats very well.

With the tremendous advancement of deep learning and communication technology, Vehicle-to-Everything (V2X) cooperative perception has the potential to address limitations in sensing distant objects and occlusion for a single-agent perception system. V2X cooperative perception systems are software systems characterized by diverse sensor types and cooperative agents, varying fusion schemes, and operation under different communication conditions. Therefore, their complex composition gives rise to numerous operational challenges. Furthermore, when cooperative perception systems produce erroneous predictions, the types of errors and their underlying causes remain insufficiently explored. To bridge this gap, we take an initial step by conducting an empirical study of V2X cooperative perception. To systematically evaluate the impact of cooperative perception on the ego vehicle's perception performance, we identify and analyze six prevalent error patterns in cooperative perception systems. We further conduct a systematic evaluation of the critical components of these systems through our large-scale study and identify the following key findings: (1) The LiDAR-based cooperation configuration exhibits the highest perception performance; (2) Vehicle-to-infrastructure (V2I) and vehicle-to-vehicle (V2V) communication exhibit distinct cooperative perception performance under different fusion schemes; (3) Increased cooperative perception errors may result in a higher frequency of driving violations; (4) Cooperative perception systems are not robust against communication interference when running online. Our results reveal potential risks and vulnerabilities in critical components of cooperative perception systems. We hope that our findings can better promote the design and repair of cooperative perception systems.

Things to Do in L.A. Tap to enable a layout that focuses on the article. A'very mean squirrel' is going nuts in this California town. Experts say it's rare for squirrels to attack people, and the most likely reason has to do with humans hand feeding or hand raising the animals. This is read by an automated voice. Please report any issues or inconsistencies here .

's most controversial moment was years in the making. It took many more for the fallout to come into full view. One morning in 2010, Alex Trebek walked onto the IBM campus not far outside New York City and prepared to inspect what would become the most unusual player in's history. The trip, clear across the country from the show's Culver City set, had been carefully planned. David Ferrucci, a computer scientist at IBM, had spent years leading a team to develop what would become the first and, so far, last nonhuman ever to compete on Longtime host Trebek would watch three practice games played with "Watson," as the system was named, and two human contestants. Then the team would be taken to lunch nearby, and Trebek would ultimately take the stage and host two more Watson practice games himself. By then the preparations for a future televised contest with IBM's creation were well underway, but this was the first time Trebek would encounter the technology in person, and his approval was crucial. Ferrucci was eager to show off one element in particular: the display, which had been rigged to show Watson's top three guesses whenever it answered, along with the numerical confidence rate it had in each one. For Ferrucci, this feature was central to demonstrating the computer's language-processing capabilities, because it showed that Watson wasn't just spitting out answers--it was reasoning. If Watson were ever going to be deployed to industries like health care, its human users wouldn't just want to know its best guess. It would be infinitely more valuable to know if Watson was 95 percent confident or just 30 percent, and whether those confidence levels were in line with its actual accuracy rate. It also made for better viewing. Ferrucci had brought his young daughter to the lab earlier in the process and showed her Watson as it played against human opponents. When Watson declined to ring in, Ferrucci's daughter turned to him and asked if the computer had crashed. He struggled to explain that it hadn't--it just wasn't confident enough to hazard a guess.