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Black shadows of humans and objects, like bicycles, were found scattered across the sidewalks and buildings of Hiroshima and Nagasaki , two of the largest cities in Japan, in the wake of the atomic blast detonated over each city on Aug. 6 and 9, 1945, respectively. It's hard to fathom that these shadows likely encapsulated each person's last moments. But how did these shadows come to be? According to Dr. Michael Hartshorne, emeritus trustee of the National Museum of Nuclear Science and History in Albuquerque, New Mexico, and professor emeritus of radiology at the University of New Mexico School of Medicine, when each bomb exploded, the intense light and heat spread out from the point of implosion. Objects and people in its path shielded objects behind them by absorbing the light and energy. The surrounding light bleached the concrete or stone around the "shadow." In other words, those eerie shadows are actually how the sidewalk or building looked, more or less, before the … [Read more...] about Why did the atomic bomb dropped on Hiroshima leave shadows of people etched on sidewalks?

Military drones are often used to store sensitive data, ranging from troop movements to strategic operations. While this may make them vulnerable to enemy interference, a new system is aiming to protect these unmanned aerial vehicles from cyberattacks. Researchers at the University of Virginia and the Georgia Institute of Technology developed the system and tested it in a series of live, in-flight cyberattack scenarios. As military and commercial drone use continues to grow , protecting against such attacks will become a priority, the scientists said. When installed on a drone, the System-Aware Secure Sentinel system detects "illogical behaviors" compared to those expected of the vehicle, said project leader Barry Horowitz, a systems and information engineer at the University of Virginia in Charlottesville. [ Rise of the Drones: Photos of Unmanned Aircraft ] "Detections can serve to initiate automated recovery actions and to alert operators of the attack," Horowitz said … [Read more...] about Cyberwarfare? New System Protects Drones from Hackers

Dmitri Alperovitch is a computer security researcher and co-founder & CTO of CrowdStrike Inc., which provides cloud-based endpoint protection. With expertise incybersecurity technology, policies and state tradecraft, Alperovitch also holds eighteen technology patents. This Op-Ed is part of a series provided by the World Economic Forum Technology Pioneers, class of 2015 . Alperovitch contributed this article to Live Science's Expert Voices: Op-Ed & Insights . Today, economic reliance on the internet is all-encompassing. With 40 percent of the world population now online, there is hardly an industry that has not been dramatically transformed and empowered by the communication and business opportunities created. But the very thing that has been such a powerful engine of global economic growth is now threatening to undermine it. Cyberthreats from hacktivists and terrorist groups, cybercriminals and nation states have had an impact on millions of companies, government … [Read more...] about How to Combat the Global Cybercrime Wave (Op-Ed)

Something to look forward to: AMD's Computex keynote just took place and we have all the details thanks to a pre-briefing which included three key announcements: FidelityFX Super Resolution (FSR), new Ryzen 5000 desktop APUs and Radeon RX 6000M GPUs for laptops. Here are our preliminary thoughts on what's coming from Team Red. FidelityFX Super Resolution (FSR) One thing that Radeon GPUs have lacked for quite some time now is a true competitor to Nvidia’s DLSS , but that's changing this month with the launch of FidelityFX Super Resolution or FSR. This is AMD’s long awaited alternative that will attempt to upscale games from a lower render resolution to a higher output resolution, allowing for higher levels of performance without a significant reduction to visuals – or ideally the same visual quality. AMD is not providing a ton of details just yet, but we do have a release date of June 22, which is just around the corner. This is when we’ll see the first game get patched with … [Read more...] about AMD at Computex 2021: FSR vs. DLSS, Ryzen 5000 APUs, and Radeon RX 6000M GPUs

In 2021, there is a real buzz building in the world of sports car racing. After many years of running incompatible technical regulations, the three organizations that are in charge of endurance racing in the US, France, and the rest of the world have managed to find common ground. Soon, a car that's able to compete for the overall win at Le Mans will also be eligible to do the same at Sebring or Daytona, and vice-versa. This convergence was meant to stimulate interest and draw in new entries, and it's doing just that: Acura, Audi, BMW, Ferrari, Glickenhaus, Peugeot, and Toyota have all confirmed programs. Entries are also expected from Cadillac, Hyundai, and Lamborghini. That level of manufacturer involvement hasn't been seen since the glory days of Group C, and it's fair to say the increasing field of competitors has fans excited at the prospect. But sports car racing—which often involves multiple classes of cars racing at the same time—is nothing if not overly complicated. The … [Read more...] about What is LMDh and why are we so excited about sports car racing in 2023?