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Why Are Medical Ultrasound Systems So Inexpensive?
Hackernews linked to a Medium post on ultrasound devices today, entitled " Why are Ultrasound Machines So Expensive? " which, being my cor...
Topics /
Science & Space
The most popular blog posts about science & space on Hacker News. 190 posts.
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World Population Growth
Explore global and national data on population growth, demography, and how they are changing.
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Fewer Allergies: A Possible Upside of Thumb Sucking and Nail Biting
It’s no surprise that children suck their thumbs or bite their nails. These behaviors are often discouraged, as they can go on to cause damaged teeth, infections, or even elicit teasing from othe...
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Schiaparelli descent data: decoding underway
Essential data from the ExoMars Schiaparelli lander sent to its mothership Trace Gas Orbiter during the module's descent to the Red Planet's surface yesterday has been downlinked to Earth and is currently being analysed by experts.
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The Busy Beaver Game
This month, a bunch of ‘logic hackers’ have been seeking to determine the precise boundary between the knowable and the unknowable. The challenge has been around for a long time. But on…
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Vagus nerve stimulation significantly reduces rheumatoid arthritis symptoms
Northwell's Newsroom offers the latest news, thought leadership and media coverage from the health system's hospitals, clinicians and administrators.
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Hubble captures vivid auroras in Jupiter’s atmosphere
Astronomers are using the NASA/ESA Hubble Space Telescope to study auroras — stunning light shows in a planet’s atmosphere — on the poles of the largest planet in the Solar System, Jupiter. This observation programme is supported by measurements made by NASA’s Juno spacecraft, currently on its way to Jupiter.
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On Two Views of Computation in Computer Science
Abstract: Machine and language models of computation differ so greatly in the computational complexity properties of their representation that they form two distinct classes that cannot be directly…
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Young blood does not reverse aging in old mice, UC Berkeley study finds
A new study from UC Berkeley argues against the rejuvenating properties of young blood and points to old blood, or molecules within, as driving the aging process.
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The Importance of Acoustics in Food Storage
Deep in the archives of San Francisco-based Aquarius Records, buried between several days’ worth of “laptop glitchery” and “brutal industro-crunch,” lies this gem: Insect Noise in Stored Foodstuffs , (INRA, 2000, CD, 19:98).
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Putin’s nuclear torpedo and Project Pluto
There was some wanking among the US foreign policy wonkosphere about the nuclear torpedo “accidentally” mentioned in a Russian news video. The device described in the leak is a megat…
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Supercapacitors Batteries charges in seconds without degrading
UCF Today provides news articles and events happening at the University of Central Florida, Orlando, Central Florida, and around the world.
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Jupiter Awaits Arrival of Juno
In preparation for the imminent arrival of NASA’s Juno spacecraft, astronomers have used ESO’s Very Large Telescope to obtain spectacular new infrared images of Jupiter. They are part of a campaign to create high-resolution maps of the giant planet. These observations will inform the work to be undertaken by Juno over…
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Engines of Evidence – A Conversation with Judea Pearl
In the early 1960s, every company had a huge investment in the future of computers. I fell into a device-oriented research group, wherein the goal was to find new phenomena that we could turn into computer memory. Magnetic core memories were already becoming a nuisance. Some people worked on photochromic phenomena…
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Confronting the Credibility Gap for Crewed Exploration of Mars
Confronting the Credibility Gap for Crewed Exploration of Mars (Notes from talk on September 22, 2016, at the Mars Society Conference. ...
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Most Radioactive Spot in New York: A Street Corner in Queens
Many are going to ask, "What's so weird about this one corner?" and I'm here to answer. The end of Irving Avenue, where it meets Moffat Str...
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A Rocket to Nowhere (2005)
The Space Shuttle Discovery is up in orbit, safely docked to the International Space Station, and for the next five days, astronauts will be busy figuring out whether it's safe for them to come home. In the meantime, the rest of the Shuttle fleet is grounded (confined to base, not allowed to play with its spacecraft…
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Famines
In many parts of the world famines have been common in the past. What causes famines? How can famines be averted?
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Life Expectancy
People are living longer across the world, but large differences remain. Explore global data on life expectancy and how it has changed over time.
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Economics of Nuclear Power
Nuclear power is cost competitive with other forms of electricity generation, except where there is direct access to low-cost fossil fuels. In assessing the economics of nuclear power, decommissioning and waste disposal costs are fully taken into account.
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Economic Inequality
How is inequality measured, who produces key databases, and what does the data tell us?
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Carcinogenicity of red and processed meat
Red meat refers to all mammalian muscle meat, including beef, veal, pork, lamb, mutton, horse and goat.