Millions of years before humans set foot in the Americas, a rush of alien animals began arriving in South America.
As the Isthmus of Panama came up from the waves, bridging the North and South American continents, llamas, raccoons, wolves, bears and many other species headed south. At the same time, the ancestors of armadillos, possums and porcupines headed north.
Paleontologists call the event the Great American Interchange. But they’ve long been puzzled by one aspect of it: Why did the majority of mammal immigrants go south, rather than the other way around? What happened to the southern mammals?
After a detailed analysis of fossil data from both continents, a group of researchers think they have an answer: a nasty extinction event struck South American mammals during the interchange, leaving fewer of them available to head north. Their research was published Monday in the Proceedings of the National Academy of
For several years, technology companies have dangled the promise of a lidar sensor with no moving parts that is also small and cheap enough to embed on several key places of a vehicle. These robust, solid-state sensors are one of many essential components auto manufacturers need before they unleash self-driving vehicles on the market. But while they’re not the only variable of the autonomous vehicle equation that needs to be solved, lidars are an important—and redundant—tool needed to help vehicles “see” in a range of weather and lighting conditions.
Several Bay Area startups are angling to be the first to bring solid-state lidar to market, and yesterday Ouster became the latest Silicon Valley company to announce that it has developed a compact lidar with no moving parts that can be mass-produced at an affordable price. The catch? Like
macOS Big Sur, Apple’s upcoming release of its Mac operating system, will finally let you watch 4K HDR Netflix content, but it turns out it’ll only work on 2018 or later Macs with Apple’s T2 security chip, according to a new Netflix support document (via Apple Terminal).
That means the full list of Macs that can watch 4K content on Netflix, at least for now, is as follows:
Mac Pro (2019)
Mac mini (2018)
MacBook Air (2018 or later)
MacBook Pro (2018 or later)
There’s an easy way to check whether your Mac has a T2 chip, as Apple points out on its website.
Disappointingly, older iMacs and pre-2018 Mac laptops that could theoretically play Netflix 4K content, whether on their built-in displays or via an 4K or 5K external monitor, won’t be able to. It’s not clear why the T2 security chip is required:
Apple is widely expected to launch two new MacBooks during October. They will be the first hardware available to the public using the new ARM-based processors instead of the current Intel chips. This is part of a planned two-year transition towards Apple using its own silicon over all of the Mac platform.
The laptops are very much on the bleeding edge of technology, but not much is expected to change on the outside – those who are looking for new design ideas and up to date technology outside of the move to ARM are going to have to wait until the back half of 2021.
For the first time, a genuine Chinese app — not a knockoff of something invented in the United States or Europe — captured the hearts of American teenagers and millennials. On one level, it was harmless: TikTok is mostly jammed with one-minute dance videos. By many measures, it was a bigger parenting problem than a national security problem. Whatever it was, it clearly wasn’t on Washington’s radar the way that the expansion of China’s nuclear arsenal, or its actions in the South China Sea, dominate the China debate.
Yet as Brad Smith, the president of Microsoft, which competed with Oracle to buy TikTok’s operations in the United States, noted, “there is a potential threat.” To make TikTok tick, the company collects vast amounts of data on Americans’ viewing habits. And the same algorithm that picks your next dance video could, in the future, pick a political video. (There is already