Author: mehedihasan9992

Elevated levels of CO2 lead to reduced cognitive ability and facilitate transmission of airborne viruses, which can linger in poorly ventilated spaces for hours. The more CO2 in the air, the more virus-friendly the air becomes, making CO2 data a handy proxy for tracing pathogens. In fact, the Australian Academy of Science described the pollution in indoor air as “someone else’s breath backwash.” Kawaiicon organizers faced running a large infosec event during a measles outbreak, as well as constantly rolling waves of Covid-19, influenza, and RSV. It’s a familiar pain point for conference organizers frustrated by massive gaps in public…

Scientists are puzzled by an”impossible” galaxy that doesn’t appear to have the fuel it needs to be growing.The dwarf galaxy, NGC 6789, is located approximately 12 million light-years from Earth, in an empty region known as the Local Void, and was first described in 1883. However, scientists didn’t realize the galaxy was still forming new stars until recently. Observations over the past couple of decades indicate that about 4% of its stellar mass was born in the past 600 million years. But given the dearth of star-forming material or even other galaxies in the region, researchers were baffled as to…

Will the real Slim Shady please stand up? Okay, there he is, Agent 47! Take the shot! On November 20, during Xbox’s Partner Preview showcase, IO Interactive announced that rapper Eminem would be the next elusive target coming to Hitman: World of Assassination in a free update arriving next month on all platforms. Here’s the strange trailer, which shows Eminem teaming up with Agent 47 to take out his alter ego, Slim Shady, who is hanging out in a strange medical facility in Japan. You can read more about this odd event in Xbox’s blog post about it. You’ll have…

Why settle for tiny pieces of chocolate when you could unwrap a Pokémon card, a Funko Pop or a Star Wars LEGO ship instead? Advent calendars have gone full geek mode, with options for fans of movies, comics, games and even science. They’re the perfect way to add some holiday cheer to your desk, game shelf or living room. Consider this your guide to the best geeky countdowns for 2025. Best advent calendars for 2025 Check out the rest of our gift ideas here. This article originally appeared on Engadget at https://www.engadget.com/our-favorite-2025-advent-calendars-you-can-still-get-now-top-picks-from-lego-pokemon-funko-pop-and-more-120042964.html?src=rss

There’s nothing more discouraging for an online store owner than watching shoppers add items to their cart…only to disappear before checkout. If that sounds familiar, you’re definitely not alone. Around 70% of online shopping carts are abandoned, which means a lot of potential sales are being left on the table. The good news is that abandoned carts aren’t the end of the story. With the right recovery system, many of those potential customers will come back. In our own software and plugin businesses, cart recovery has become one of the most reliable ways to boost sales without increasing traffic or…

Is the Galaxy Watch 7 the absolute best smartwatch an Android phone user can buy this holiday season? Probably not. But Samsung’s “standard” 2024-released intelligent timepiece is undoubtedly still up there with the new Galaxy Watch 8 and Watch 8 Classic, looking like a tremendously value-packed alternative to the Apple Watch Series 11 and Apple Watch Series 10… at the right price.Normally available for $249.99 and up (after the July 2025 announcement of the $349.99 and up Galaxy Watch 8, at least), the objectively stylish and reasonably powerful Galaxy Watch 7 is now on sale at a hefty $120 discount.…

Forget coffee, you can now stay alert by strapping on a wristband that lightly zaps you awake. That’s what eCoffee Energyband, a Chinese gadget that sells for just over $100, is claiming to do.First released in late 2023, the product is a lightweight wearable with two electrode pads that sit against the inner wrist. WAT Medical, a Canadian company with a Chinese subsidiary making and marketing the device, claims the mild electrical signals sent by the wristband can keep wearers alert by stimulating nerves in the brain. The effect is supposedly about the same as a cup of coffee, minus…

Sometimes, the best gaming headset doesn’t have to be a “gaming headset” at all. While many people view these devices as their own category, they’re ultimately still headphones, just with a boom mic and some fancy branding attached. While the overall quality of dedicated headsets has improved over time, they still tend to cost extra compared to a good pair of wired headphones (which, yes, still exist). If you need to chat with friends, you can always buy a microphone separately and get superior sound quality there as well.That said, we completely understand that many people just want the simplicity…

Venus, Jupiter and Saturn are easy to see in the night sky, but few skywatchers have ticked Mercury off their planetary bucket list. That may change on Tuesday, Nov. 25, when early risers will get a rare chance to see the closest planet to the sun together with its bright neighbor, Venus.Mercury is notoriously difficult to spot due to its close orbit, which often causes the small planet to be lost in the sun’s glare. However, Mercury occasionally makes a brief appearance before sunrise.A particularly good window for Mercury watching opens on Nov. 25 and continues until around Dec. 25.…

Wall outlets disappear fast when every device needs its own charging brick cluttering power strips and blocking adjacent sockets. The Ugreen Nexode 65W GaN charger just hit a record low of $24 for Black Friday on Amazon, down from its usual $39 price. This four-port charger consolidates multiple charging bricks into a single compact unit that occupies one outlet while powering your laptop, phone, tablet, and wireless earbuds simultaneously. When traveling, carrying four separate chargers involves dedicating a lot of valuable bag space to power adapters, whereas this single charger handles everything. GaN technology keeps the charger cool and efficient…