It’s simple: A filtration system mounted to your faucet. It filters the tap water that streams from your pipes, acting as a sort of defense, says Mike Mitchell, the Director of Advanced Technology at PUR. “Filtration systems offer us a form of insurance.” So what sorts of contaminants does a faucet system filter out, and how does it work? We tapped Mitchell for a lesson in high-tech filtration. How a faucet-mounted filter works A good water filter will capture the bad stuff like lead, industrial pollutants, and other contaminants....

Popular Science got the opportunity to ask this very question in a live interview earlier today with NASA astronaut Scott Kelly and his Russian counterpart Mikhail Kornienko (video above). Both men are spending over a year aboard the station as part of a grand experiment to find out how long missions in space affect the human body. And having already spent 257 days of their year-long mission inside the relatively cramped confines up in orbit, they’re probably more eager than most to try something totally new....

First Men On The Moon By Dr. Wernher von Braun In the two-man cabin of the Apollo 11 Lunar Module, slowly riding down its vertical rocket jet, blue signal lights flash on. Probes dangling 60 inches below the disk-shaped footpads have touched the moon. The pilot cuts the engine. A moment later, a mild jar tells the crew they have landed on the moon’s surface. That is to happen early in the afternoon of Sunday, July 20, 1969, in the western part of the moon’s Sea of Tranquility, according to NASA’s plans at this writing....

The fact that these things come from Facebook is relevant. Just as the massive Cambridge Analytica privacy scandal started to fade from media coverage, a vulnerability affecting more than 50 million users popped up just a few weeks ago. Information about its users is valuable to Facebook and a device like this could provide troves of it under the right circumstances. That makes one specific piece of the Portal devices particularly important: the button that turns the camera and microphone on and off....

People fear and mistrust what they don’t know—including people of other racial and ethnic backgrounds. That lack of trust causes social and political divisions in the US and around the world, especially when it comes to immigrants. Inspired by research in Hungary that found computer games could help players reduce their prejudice toward immigrants, my colleague Patrick Stewart devised a role-playing game as part of an American national government course at the University of Arkansas....

Choosing a good password means finding a careful balance between something simple you won’t forget, and something complex that no one will ever guess. Reusing passwords across multiple accounts is a tempting way to ensure you won’t get locked out of your favorite platforms, but this is a dangerous tactic as far as your online security goes. If hackers gain access to one account, they can get into all others using the same password....

There’s a popular notion that we all need to be chugging eight cups of water everyday for optimal health. While it is true that staying hydrated will certainly help contribute to your body working at its best, there’s no evidence to suggest that consistently drinking eight glasses of water a day is needed. In reality, each person’s water intake needs vary, and they depend on a number of factors, including how much exercise you get, the weather conditions of where you are, what you eat, and other health conditions you might have....

Images can endure for centuries, but they need some care and upkeep if the physical object of the photograph is going to last. The Art Institute of Chicago houses one of the world’s largest photography collections with more than 24,000 pieces, and you better believe that there is a talented team of preservationists keeping works from photographers like Alfred Stieglitz and Walker Evans in tip-top shape. A new PBS NewsHour segment explores the process that goes into preserving these pieces of work for the next generation....

Scores of species have dug out clever niches in risky territories meant for people. Peregrine falcons, for instance, went from cliff diving for pigeons to nesting in and hunting from skyscrapers. Orangutans, meanwhile, are increasingly hiking around the forest on logging roads instead of swinging around on vines. In other cases, like the European starling’s, humans have introduced fauna that are now ousting local creatures. These shifts are inevitable and likely permanent: There’s no going back to when wildlife was still completely wild....

“There will be an intermission,” director Cecil B. DeMille announced during the movie’s introduction. And audiences’ bladders were relieved. On average, movies aren’t getting longer, but they also don’t come with a predetermined bathroom break. That means when nature calls, you’ve got to either sit in growing discomfort or gamble on the best time to run to the restroom. But it doesn’t have to be this way, and for most people, setting your body to “do not disturb” is fairly simple....

It’s a fairly simple project, too: just hook an Arduino Uno up to a motion sensor and an electronic switch called a relay, then plug in your fan, and you’re good to go. If that sounds complicated, don’t worry, we’ll walk you through it. And once you’ve got the hang of it, you’ll be able to apply the concept to lighting or anything else that plugs into the wall. There are, of course, commercial smart home options available, but if you want total control over your system and something you can build upon, this is a great way to implement basic home automation....

So if you’re someone who’s fallen out of love with a picture (or a person) in one of your posts, but haven’t trashed it because you like the other images, now’s your chance to excise that malignant memory like a skilled social media surgeon. We’ll start by noting that you can’t delete one image from a two-photo carousel, potentially because that would make it a single-item post and mess with something inside Instagram, though we can’t say for sure....

Fortunately, finding out the going rate for your unwanted gadgets is not hard, and there are lots of places willing to take them off your hands. Just a few minutes of research can be enough to tell you whether it’s worth your while to cash in. The closer you can get to the exact model of the item you’re selling, the better—remember that the specs on laptops and phones, for example, can vary widely from model to model....

If these bees have decided to call your home their home, it can be tempting to simply exterminate them, but you should take a more peaceful route. Because of how hugely beneficial they are to local ecosystems, many beekeepers say it’s important to safely move them instead. The female bees start crafting these nests in the spring, laying their eggs inside for the males to visit and fertilize. The hatchlings emerge in late summer and leave the nests in search of flowers, before spending the winter inside the nest tunnels....

Of course, that doesn’t mean posture isn’t something to be conscious of or proactive about. It can cause health issues, although this happens much less frequently than people suppose. More often, bad posture is a symptom of an underlying problem, which your healthcare provider can often help you remedy. That’s according to Eric Robertson, a physical therapist and spokesperson for the American Physical Therapy Association. He says that posture is a popular boogeyman—the presumed culprit for everything from back pain, to headaches, to the constriction of blood vessels, to fatigue....

The weather is finally getting warmer, and you know what that means: It’s chub rub season. Whether you experience chafing after vigorous outdoor jogs or whenever you leave the house, it’s important to know to soothe your sore skin—and keep this painful friction from afflicting you in the first place. Your skin can chafe under the assault of any kind of friction—be it from clothes or another patch of skin—but certain conditions make that close contact more dangerous....

Before we start, know that this guide will only cover non-explicit images. Google has a way to report explicit content that’s abusive toward children, but it involves reporting the content directly to the National Center for Missing and Exploited Children or to one of many organizations across the globe. If you are, the option you’re looking for is one of several types of information Google allows you to request for removal....

Whatever the reason, scheduling is now readily available in many mobile email apps, including the default platforms on iOS and Android—the Mail and Gmail apps, respectively. Once you know how to do it, you might find scheduling emails comes in handy more often than you expected. The same scheduling features are available for new emails and replies. To start a message thread, tap the compose button down in the bottom right corner of the main screen (it looks like a pen writing on a page)....

Know the risks Public Wi-Fi is inherently less secure than the private network you’ve got at home, because you have to share it with dozens, or even hundreds, of strangers, rather than a handful of people you know and (we presume) trust. So, if you want to absolutely 100 percent guarantee your privacy and safety on public Wi-Fi, just don’t use it. And if you truly must have that sweet, sweet internet hookup, be aware that you’re taking the risk of having total strangers snoop on your browsing session....

But there are some images you’re maybe not ready to face or would rather not be reminded of. Maybe you’ve been through a painful break-up, or a loved one passed away, and even though you don’t want to delete these images, you don’t want them popping up on your screen without warning. If this sounds familiar to you, know that you can select specific people and animals you don’t want your apps to feature in your memories....