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giovedì 14 luglio 2016

A Brief History of Life, Part 1: The Archean and the Proterozoic (Breve storia della Vita sulla Terra - Archeano e Proterozoico) - via @SciShow



Sources:
http://www.snowballearth.org/when.html
https://www.coursera.org/learn/astrob...
http://www.astrobio.net/news-exclusiv...
http://exploringorigins.org/timeline....
http://www.fossils-facts-and-finds.co...
http://www.ucmp.berkeley.edu/precambr...
http://www.ucmp.berkeley.edu/bacteria...
http://www.ucmp.berkeley.edu/precambr...
http://www.britannica.com/science/Arc...
http://paleobiology.si.edu/geotime/ma...
http://www.pnas.org/content/112/47/14...
http://onlinelibrary.wiley.com/doi/10...
http://www.ucmp.berkeley.edu/precambr...
http://paleobiology.si.edu/geotime/ma...
http://www.britannica.com/science/Pro...
http://www.ucmp.berkeley.edu/protista...
http://www.nature.com/nature/journal/...
http://www.pnas.org/content/102/32/11...
http://www.ncbi.nlm.nih.gov/books/NBK...
http://ww2.chemistry.gatech.edu/~lw26...
http://www.fossilmuseum.net/Evolution...
https://www.sciencedaily.com/releases...
http://www.britannica.com/science/con...
https://books.google.com/books?id=6Qu...
http://www.sciencemag.org/news/2015/1...



Why Did We Stop Going To The Moon? (Perchè abbiamo interrotto le missioni sulla Luna?) - via @SeekerDaily



Learn More:
Washington Post:
NASA's piece of the budget has declined by half since the Pluto mission was broached
https://www.washingtonpost.com/news/t...

Scientific American: Down to Earth: The Apollo Moon Missions That Never Were
http://www.scientificamerican.com/art... \

Slate: Another Year, Another Set of Bizarre Cuts to NASA's Budget
http://www.slate.com/blogs/bad_astron...

New York Times: Astronauts Land on Plain; Collect Rocks, Plant Flag
https://partners.nytimes.com/library/...



What is life? Are viruses alive? (Si possono definire i virus "vivi"?) - via @_ThisPlace_



via @_ThisPlace
What is it that makes things alive?
What if we made robots that could sustain themselves? What if they could mine metals or recycle old robots, reprogram and remake themselves? There's nothing there we would traditional call alive, but they would have at least have the essence of this perpetual rube Goldberg machine. Would that be called life? I don't think many people would. Those are just self replicating robots. Those are fucked up robots that need to learn there place under humanity's boot.
It might be another sort of replicating never ending Rube Goldberg machine, but maybe life is more specific to the shape that we apply the name to (with cells and DNA and all).
But then what about life on other planets?
Sometimes people say that we shouldn't assume all other forms of life are like ours because it's close minded. What if it's not just DNA and the cell. What if it's not even ....a code, and some bunch of stuff that reproduces the code in a way that we understand it.
What if it's something ambiguous that we can't even begin to comprehend or recognize?
but .....
What?
I think the uncertainty of what alien life might be like, maybe it's a side effect of being able to recognize and describe life here really easily, while right beside that having a difficult time defining it. There isn't really an unequivocal definition yet. So people can imagine some being of pure energy or whatever that we would recognize as life, without first imagining the fundamental process behind it and why we call it life.

Original "What is Life?" Video: http://www.youtube.com/watch?v=EZHD9E...


mercoledì 13 luglio 2016

Password Cracking (Metodi per craccare le password nonostante la criptazione Hash&Salt) - via @Computer_Phile



'Beast' cracks billions of passwords a second, Dr Mike Pound demonstrates why you should probably change your passwords...

How NOT to Store Passwords: https://youtu.be/8ZtInClXe1Q
Password Choice: Coming Soon
Deep Learning: https://youtu.be/l42lr8AlrHk
Cookie Stealing: https://youtu.be/T1QEs3mdJoc

http://www.facebook.com/computerphile
https://twitter.com/computer_phile

This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: http://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com



E-Cigarette Update: What to Do about Kids and Vaping? (Aggiornamenti sull'utilizzo delle sigarette elettroniche) - via @Healthcare_Triage



Source: http://www.nytimes.com/2016/05/11/upshot/e-cigarettes-are-safer-but-not-exactly-safe.html?_r=0



martedì 12 luglio 2016

NASA Core Rope Memory (Il programma del software di navigazione delle missioni Apollo era "filato a maglia") - via @SciShow









How do Passwords Get Stolen? (Tecniche usate dai cybercriminali per rubare le password) - via @LinusTech






Hypercanes (Iperuragano: ipotetico uragano che potrebbe formarsi se gli oceani raggiungessero la temperatura di circa 50 °C)



Sources:
http://oceanservice.noaa.gov/facts/cy...
http://scijinks.jpl.nasa.gov/hurricane/
http://www.hurricanescience.org/scien...
http://www.windows2universe.org/earth...
ftp://texmex.mit.edu/pub/emanuel/PAPERS/hypercane95.pdf
http://www.ipsnews.net/2005/09/enviro...
http://journals.ametsoc.org/doi/pdf/1...
ftp://texmex.mit.edu/pub/emanuel/PAPERS/annrevfinal.pdf
https://books.google.com/books?id=yRM...
http://www.hurricanescience.org/scien...



5 Amazing Inventions You NEED To See #46 (5 Invenzioni sorprendenti) - via @FiverTechnology



Mini Plaster Hand http://www.miniorenji.com/#!mini-plas...
CoWatch http://www.imcowatch.com/
Tiny1 http://tinymos.com/
Pilot https://igg.me/at/waverlylabs/x
Corsdrive https://igg.me/at/FpuaVM7HNnw/x



10 Real Life Cyborgs (10 Cyborg esistenti nella realtà) - via @Alltime10s






sabato 9 luglio 2016

Why Isn't a Kilogram a Kilogram? (Ridefinire il chilogrammo per sempre sulla base della costante di Planck) - via @SciShow






Gamer's Paradise (A Nottingham esiste il museo/paradiso dei videogiocatori) - via @Computer_phile






Are Self-Driving Cars Safe? (Aggiornamenti sull'incidente mortale incorso ad un guidatore di Tesla con assitente di guida attivo) - via @SciShow



Sources:
https://www.teslamotors.com/blog/trag...
http://www.techinsider.io/how-teslas-...
http://www.nytimes.com/2016/07/02/bus...
http://www.nytimes.com/2016/07/04/you...
http://www.nytimes.com/2016/07/02/bus...
http://www.nytimes.com/2016/07/02/bus...
http://www.nytimes.com/2016/07/01/bus...
http://fortune.com/2016/07/03/teslas-...
http://fortune.com/2016/06/30/regulat...
http://www.slate.com/blogs/moneybox/2...
http://gizmodo.com/it-looks-like-the-...
https://www.theguardian.com/technolog...
http://www.usatoday.com/story/tech/na...


XS4ALL | Don't click that button, Mikko Hypponen (Conferenza di Mikko Hypponen, ricercatore sicurezza di FSecure, sul fenomeno Ransomware)