Red sprites, secondary jets and newly discovered green afterglow called "ghosts" triggered by red sprites. A dozen vibrant red sprites were recorded on this evening and only two events had the green afterglow.... continue reading
posted by newtboy 3 years 9 months 1 week ago • 985 views • 2:32Videos (428) | Sift Talk (0) | Blogs (0) | Comments (1000) |
"It was so obvious! All I had to do was "Squeek squeeeken squeek!' ..."
posted by ant 3 years 9 months 2 weeks ago • 84 views • 5:11YouTube description: Artists have abandoned artworks for many reasons throughout history. Guest host John Green shares some of his favorite unfinished artworks and explains why they resonate with him... continue reading
posted by Aard Vark (oritteropo) 3 years 10 months 2 weeks ago • 417 views • 9:42Officials in Buffalo, New York, want an investigation into the firing of a black police officer who intervened when a white colleague had a suspect in a chokehold. The incident happened in November 2006.... continue reading
posted by newtboy 3 years 10 months 3 weeks ago • 646 views • 5:14There's been a few stories recently about detonation engines and how they're supposed to be superior to traditional jet or rocket engines. So, what is a detonation engine, what's the difference between... continue reading
posted by newtboy 3 years 11 months 3 weeks ago • 25 views • 11:14From Youtube, "Well... this took longer than expected. I am sorry you had to wait so long for me to finish this video, I had some reading to do, then write the video, record the audio, and then the... continue reading
posted by w1ndex 4 years ago • 19 views • 1:09:23NASA's current fleet of spacesuits was built in 1974, and each was reported to cost between $15 million and $22 million. Today, that would be about $150 million. Having not built any new mission-ready... continue reading
posted by bobknight33 4 years ago • 100 views • 10:41Ipley Cross, in the middle of the New Forest, is one of the most dangerous road junctions in Britain. Why? • Thanks to Bez, whoever you are: their definitive article on this junction is here: https://singletrackworld.c... continue reading
posted by eric3579 4 years 1 week ago • 622 views • 4:12YouTube description: 50 Years Ago Apollo 13 was preparing to launch on a mission that would become famous for the wrong reasons, 56 Hours into the mission an oxygen tank would explode, blowing the side... continue reading
posted by Aard Vark (oritteropo) 4 years 4 weeks ago • 29 views • 12:18So apparently walruses can whistle. Who knew? (via digg.com)
posted by Aard Vark (oritteropo) 4 years 4 weeks ago • 624 views • 22 secs"The Aedes aegypti mosquito, which can transmit dengue fever and Zika, makes a meal of us around our homes. And her eggs are hardy. They can dry out, but remain alive for months, waiting for a little water... continue reading
posted by ant 4 years 4 weeks ago • 21 views • 3:51YouTube description: The story of Apollo 13 goes beyond a tale of survival. The mission also successfully completed a science investigation that is still helping to inform our understanding of the Moon... continue reading
posted by Aard Vark (oritteropo) 4 years 1 month ago • 69 views • 2:46We all know that making models for an epidemic's spread has almost infinite variables and is freaking hard to make. But, if you use statistics, you can at least learn some interesting things.... continue reading
posted by eoe 4 years 1 month ago • 69 views • 23:12Plain old soap and water absolutely annihilate coronavirus. Read more about the coronavirus pandemic at http://vox.com/coronavirus You've been told a thousand times: wash your hands to stop the spread... continue reading
posted by eric3579 4 years 1 month 2 weeks ago • 379 views • 3:45"Why does America's system for picking the president start in Iowa? Before Americans vote on the next president in November, both major political parties have to settle on a nominee. That process is... continue reading
posted by ant 4 years 2 months 2 weeks ago • 309 views • 8:03From Youtube, "The logistic map connects fluid convection, neuron firing, the Mandelbrot set and so much more. Animations, coding, interactives in this video by Jonny Hyman
posted by w1ndex 4 years 3 months 1 week ago • 1,113 views • 18:39A recent study had a lot of negative things to say about diet sodas, but how seriously should we take that study? Observational research can be powerful and useful, but it can also lead to shaky outcomes.... continue reading
posted by eric3579 4 years 4 months ago • 512 views • 6:17YouTube description: Today I'm a teach you how to make a one-man band so you can steal jobs from all the musicians around you!
posted by Aard Vark (oritteropo) 4 years 4 months ago • 331 views • 13:28YouTube description: You are probably aware of the fact that elephants make trumpeting noises - but did you know that most of their communication is so low pitched that humans can’t even hear it? ... continue reading
posted by Aard Vark (oritteropo) 4 years 5 months 2 weeks ago • 489 views • 6:05YouTube description: There’s no telling what you can do when you put your mind to it. Take Richard Hull, he built a small-scale fusion reactor—in a shed, in his backyard. A retired electronics engineer,... continue reading
posted by Aard Vark (oritteropo) 4 years 6 months ago • 1,462 views • 3:32