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Climate Change or Global Warmimng?

13 Misconceptions About Global Warming  https://www.youtube.com/watch?v=OWXoRSIxyIU For CO2, sea levels, Arctic sea ice, Antarctic and Greenland land ice: http://climate.nasa.gov Satellite data shows that ground-based stations underestimate recent warming: Cowtan and Way, 2014 http://onlinelibrary.wiley.com/doi/10... For papers published on climate change during the 1970's, see Peterson, 2008 http://ams.confex.com/ams/pdfpapers/1... For solar and temperature data see NASA GISS, PMOD: http://www.acrim.com/tsi%20monitoring... Krivova et al. 2007: http://www2.mps.mpg.de/projects/sun-c... CO2 ratio of Carbon-13:Carbon-12 decreasing. IPCC AR4: http://www.ipcc.ch/publications_and_d... CO2 emitted by volcanoes vs by humans: Gerlach, 2011 www.agu.org/pubs/pdf/2011eo240001.pdf Gerlach Mauna Loa CO2 data: http://www.esrl.noaa.gov/gmd/ccgg/tre... Rising atmospheric water vapour: Santer, 2007 http://www.pnas.org/cgi/reprint/07028... A doubling of CO2 will likely lead to a 3C i...
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New Space Technologies

The Genius of 3D Printed Rockets https://www.youtube.com/watch?v=kz165f1g8-E 3D printed rockets save on up front tooling, enable rapid iteration, decrease part count, and facilitate radically new designs. Thanks to Tim Ellis and everyone at Relativity Space for the tour! https://www.relativityspace.com/ https://youtube.com/c/RelativitySpace The Mars Helipopter https://www.youtube.com/watch?v=GhsZUZmJvaM The Mars Helicopter, Ingenuity aims to make the first powered flight on another planet when it takes off on Mars. It has now landed and safely checked in with the rover. It should detach and fly within the first 30-60 days of the mission. I learned a lot getting to visit the drone right before it was mounted on the rover at NASA Jet Propulsion Laboratory in Pasadena. How do you fly in 1% of Earth's atmosphere: Have large rotors (they are 1.2m in diameter) and spin them very fast, around 2500 RPM (5x the speed of a helicopter on Earth). Plus the aircraft has to be light: The Mar...
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The Riemann Hypothesis

  The Riemann Hypothesis, Explained https://www.youtube.com/watch?v=zlm1aajH6gY The Riemann hypothesis is the most notorious unsolved problem in all of mathematics. Ever since it was first proposed by Bernhard Riemann in 1859, the conjecture has maintained the status of the "Holy Grail" of mathematics. In fact, the person who solves it will win a $1 million prize from the Clay Institute of Mathematics. So, what is the Riemann hypothesis? Why is it so important? What can it tell us about the chaotic universe of prime numbers? And why is its proof so elusive? Alex Kontorovich, professor of mathematics at Rutgers University, breaks it all down in this comprehensive explainer.
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Doesn Electricity Run on Electrons?

  Checking the Speed of Electricity: I bought 1000 meters of wire to settle a physics debate I bought 1000 meters of wire to settle a physics debate I constructed the Veritasium electricity thought experiment in real life to test the result. If you were watching my community posts a month ago, the day that Derek over on Veritasium posted his video about electricity misconceptions, you saw me obsess over that problem a bit too much and immediately use it as the excuse I've been looking for for years to own my own oscilloscope. Instead of two light-seconds of wire, I used about 3 light-microseconds of wire, but it was PLENTY to resolve exactly what is happening in this circuit. I hope you enjoy the analysis! Thanks to Derek at Veritasium for his blessing to make a real-world version of his gedanken experiment. If you haven't seen his video yet, you might want to go watch that for context, and I also highly recommend ElectroBOOM's video on the topic and EEVBlog's video o...
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The Biggest Myth In Education - by Veritasium

  https://www.youtube.com/watch?v=rhgwIhB58PA You are not a visual learner — learning styles are a stubborn myth. Part of this video is sponsored by Google Search. Special thanks to Prof. Daniel Willingham for the interview and being part of this video. Special thanks to Dr Helen Georigou for reviewing the script and helping with the scientific literature. Special thanks to Jennifer Borgioli Binis for consulting on the script. MinutePhysics video on a better way to picture atoms -- https://ve42.co/Atom
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