Category "nasa"
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Smart cities: analytics, bigdata, cheap IoT sensors
Analytics, big data, cheap IoT sensors and other new #tech will help create smart cities and reduce air pollution. Shown here is Shanghai as seen from the bund (We originally used this photo in our much longer article about pollution in China, but the photo itself drew a lot of reader interest here and on social media). The haze over the city is due to PM2.5 particulate air pollution, which NASA estimates kills over 2 million annually. PM2.5 pollution levels in Shanghai are frequently in what the US EPA would consider the “unhealthy” range, at which 24 hour exposure can impact cancer statistics according to WHO information. Today, citizen scientists can purchase inexpensive arduino-based iot devices to help them monitor indoor and outdoor pollution levels (Wikipedia link). Analytics on the data can help inform policies to help mitigate the pollution, as well as help residents take steps to stay healthy. Read more in our earlier article that originally featured this photo.… Read the restType 3 civilization (Hoag object ring galaxy photo)
Continuing our earlier Carl Sagan civilization post, today’s photo is Hoag’s object, a non-typical ring galaxy. A type III civilization would, be definition, be able to harness the entire energy of a reference galaxy. We left off earlier on the important wrinkle that Sagan added to the Kardashev scale on civilization advancement (and, by extension, the Leslie White scale on historical civilizations). Both of these scales focus on technology (with Kardashev focused on technology to harness energy), but Sagan also added information processing (data science!) to the scale. He defined a scale from A-Z to represent the amount of information available to a civilization, each letter representing a 10-fold increase, with A representing 10^6 and Z representing access to 10^31 bits of information. Sagan believed no civilization could yet have achieved a Z status, as not enough time had passed in the history of the universe to allow this much exchange of information.… Read the restPhoto of Earth by Nasa? Nope. Astroengineering.
Is this a photo of Earth by Nasa? Nope. In this artist’s conception, the Moon is geoengineered/astroengineering by an advanced civilization to be more like Earth. Will inducing artificial earthquakes through geoengineering or someday save lives, or is it too dangerous? Will we someday geoengineer the and the stars, as discussed on recent science documentaries? These were discussed in our earlier blog post on fracking and geoengineering, for which this was the featured image. Photo Credit: Daein Ballard/WikiMedia/CC-BY-SA-3 Post and some comments below may be synced from our original Instagram version. Instagram likes: (more…)… Read the restAsk Acculation: How do I control my indoor air quality?
Although we’ve certainly done multiple articles on this before, second reader question on “how do I control my indoor air quality” means it’s time for another blog post on air quality technology. I live in San Fransisco where the air is not particularly good. How do I protect my newborn baby? I’m worried both about dust from cars and blowing over from China as well as chemical emissions from our new rugs and paint. Another reader: I’ve come down with allergies. Taking control of my indoor air quality now sounds very appealing. Automobile exhaust probably responsible for some “allergies” Kudos to you for trying to take control. Funny thing about allergies: we’re getting anecdotal evidence from family and friends that all of this technology is somewhat new to the medical community as well (at least the concept that it so affordable anyone can just go out and buy it). We have friends and relatives that for years were diagnosed with minor “allergies” that everyone (including the doctors) assumed were minor pollen allergies.… Read the restRecent Comments
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