Science

  • Popular Science 2 hours 21 min ago
    • Shipping up to 15,550 20footlong containers across the world’s waves is hard work.
    • So hard that Emma Maersk, a quartermilelong cargo ship, needs serious muscle: the Wärtsilä 14RTflex96C—44 feet tall and 87 feet long—among the largest diesel engines on the planet.
    • That’s about 60 percent faster than competitors. 1,660 Fuel use, in gallons per hour Although it’s a relatively efficient engine, the 14cylinder RTflex96C can still consume nearly 12 million gallons of diesel in a year.
    • And since fuel can account for roughly 70 percent of a cargo ship’s operating budget, this one is a money burner.
    • Newer engines can use cleaner fuel, such as morerefined diesel or liquid natural gas, at lower temperatures.
  • Popular Science 16 hours 39 min ago
    • To make money, the company sells anonymized information scraped from its users email accounts.
    • What it doesn’t say, Hong points out, is how they monetize the service, and what they do with your data.
    • When you do pay for a service, on the other hand, it’s easier to understand how the company’s model works.
    • For iOS users, looking in Settings, then Privacy, then Location Services will reveal what apps have permission to use your location and when, and what have used them recently.
    • Ultimately, people’s expectations of how an app or service uses your data matters, Hong says.
  • Popular Science 16 hours 51 min ago
    • Neil Deemers, technical superintendent of The Pacific Sharav, regularly spends 28 days on the oil rig anchored in 12,000feetdeep water off the Gulf Coast.
    • On the 90minute helicopter ride out to the rig, Deemers catches up on his reading.
    • Currently: Steven Callahan’s memoir Adrift, about surviving 76 days alone at sea in a life raft.
    • Deemers carries flashlights with waterproof plastic casings, never metal; no one wants sparks from a dropped metal flashlight reaching all that oil.
    • For onrig entertainment, Deemers never forgets a USB drive loaded with his favorite movies and TV shows.
  • Popular Science 18 hours 39 sec ago
    • The Sonos Playbase speaker costs $699 and can be paired with an optional Sonos Sub Wireless Subwoofer for an additional $699.
    • A more credenzafriendly home theater speaker, the Sonos Playbase sits under your flatscreen, not in front of it.
    • After adding several music streaming services (Spotify, Google Play Music, and SoundCloud) and running the company's Trueplay roomtuning software, we settled in for hours of Netflix streaming, movie watching, and dailymix mastering.
    • As the second home theaterfocused speaker in Sonos’s lineup, the Playbase isn't the product many fans were expecting.
    • For a company that's doubling down on streaming services and voice control, the Playbase shows no progress in either of those areas.
  • Popular Science 20 hours 51 min ago
    • The seats have mesh roofs to protect riders as they shoot 415 feet into the air and plunge into freefall.
    • That’s why my favorite cow is the artificial one in my lab.
    • The planetʼs water cycle turns water we might consider nasty into water we consider drinkable; so do the ISSʼs systems.
    • At the time, maybe 0.1 percent of utilities in the United States disinfected their water with chlorine dioxide.
    • But chlorine dioxide isn’t water soluble, so when people opened their faucets, it would quickly fill the surrounding air.
  • Popular Science 21 hours 10 min ago
    • In fact, humans have been hanging out with doggos for at least 15,000 years or so, and likely a lot longer.
    • Scientists still aren't sure how and when we first domesticated those ancestral gray wolves, let alone how each historical breed first came to be.
    • These dogs have since bred extensively with European breeds (and with each other), so it's not clear just which genes came from where.
    • Right now, more than half the dog breeds in existence have not had their genome sequenced.
    • And research on canine disease could help humans, to boot.
  • Popular Science 22 hours 55 min ago
    • That means a son, daughter, nephew, or niece will be quick to "borrow" your phone or tablet—or eventually request a device of their own.
    • Whether you're handing your phone to a nagging toddler or sorting out a new tablet for your children, you'll need to protect the device against unwholesome content, unauthorized purchases, and more.
    • Make sure a PIN is set at the same time—this will be the same PIN or pattern used to unlock your device.
    • If you're buying your children a shared tablet or often lending yours out, then this is the best option.
    • Your best bet for childfriendly videowatching is the separate YouTube Kids app, which uses Google's algorithms and filters to keep little ones away from stuff they shouldn't be seeing.
  • Popular Science 22 hours 55 min ago
    • You need deep water to float a big boat.
    • Today, its 11,000 workers cut, weld, and otherwise bang together several navy craft at a time.
    • Shown here is the future USS Tripoli, an amphibious assault transport whose 855foot deck is longer than some nations’ aircraft carriers.
    • To keep Tripoli’s massive 98 million pounds—including crew, marines, jets, helicopters, supplies, and the ship itself—in one place atop the waves, it needs anchors.
    • The forward house on a navy destroyer supports the bridge, where the command crew literally calls the shots.
  • Popular Science 23 hours 4 min ago
    • In the same reflexive way, when you feel emotions like anger your mind instantly triggers physiological reactions like an increase in blood flow and muscle tension that prepare you to respond to the threat.
    • On some subconscious level, we know that too many violations of small social rules can lead to social exile.
    • These selfconscious emotions include embarrassment, guilt, shame, and, I would add, feeling awkward.
    • It felt bad enough that I had committed an awkward act, but my blushing felt like a public acknowledgment of my awkwardness that made things worse.
    • Another emotion related to awkward feelings is guilt, which makes you feel bad about your behavior and motivates you to repair the social damage: to apologize, clean up a spill, or pay for something you have damaged.
  • Popular Science 23 hours 6 min ago
    • After watching hours of Chopped (or Iron Chef, if that's your bag) do you feel ready to try and impress your friends at a dinner party?
    • A culinary torch will let you sear, brown, boil, and melt your foods with more precision and control.
    • This butane torch by WEINAS has a double blue flame that can reach up to 2500 degrees.
    • The torch is a made of aluminum and has a switchandtwist valve that controls the flow of the fuel.
    • Butane is not included—the torch holds 12 grams—so make sure to order some here.