From youtube: UV at ground level is non-ionizing but it damages DNA and causes photoaging - how? Also, it turns out glass doesn't block all UV (specifically UVA passes through). This is something I learned... continue reading

posted by nanrod 2 weeks 6 days ago • 339 views • 4:46

The nutrient content of food is declining. Is it because of soil depletion, selective breeding, or... something else?

posted by nanrod 1 month ago • 573 views • 7:30

A video about the full length video "Vitamania" with Derek Muller of Veritasium as executive producer and host, including a trailer for Vitamania. You can watch "Vitamania" for a fee on various sites... continue reading

posted by nanrod 1 month 1 week ago • 402 views • 4:58

YouTube: An experiment on how turbulent convection in Earth's core makes a magnetic field

posted by PlayhousePals 2 months 1 week ago • 764 views • 8:27

In which Derek drives a replica of the first internal combustion engine car patented by Karl Benz in 1886 and talks about how cars have improved since then (claims about Nazi speed records on public roads... continue reading

posted by Aard Vark (oritteropo) 10 months ago • 467 views • 9:14

YouTube description: These are the molecular machines inside your body that make cell division possible. Animation by Drew Berry at the Walter and Eliza Hall Institute of Medical Research. http://wehi.tv ... continue reading

posted by Aard Vark (oritteropo) 10 months 1 week ago • 1,025 views • 6:21

YouTube: The merging of two neutron stars was detected by gravitational waves and then by telescopes in all parts of the electromagnetic spectrum. This is a historic detection as it demonstrates: - the... continue reading

posted by PlayhousePals 11 months 1 week ago • 1,217 views • 5:26

YouTube description: How Schlieren imaging works in color, black and white and slow-mo. Filming by Raquel Nuno Sound Effects by A Shell in the Pit (H/T @eric3579)... continue reading

posted by Aard Vark (oritteropo) 11 months 4 weeks ago • 307 views • 8:59

YouTube: I came across these four physics puzzles over the years in discussions with Neil deGrasse Tyson (riddle 4: which part(s) of a moving train are going backwards with respect to the ground?), Simon... continue reading

posted by PlayhousePals 1 year 5 months 1 week ago • 1,197 views • 4:24

YouTube: How the brain works, how we learn, and why we sometimes make stupid mistakes.

posted by PlayhousePals 1 year 6 months 3 weeks ago • 737 views • 12:10

YouTube: For a long time we thought the Moon was completely dry, but it turns out there are actually three sources of lunar water.

posted by PlayhousePals 1 year 7 months 2 weeks ago • 381 views • 6:04

YouTube: Spinning magnets near copper sheets create levitation!

posted by PlayhousePals 1 year 7 months 3 weeks ago • 284 views • 6:19

YouTube: Used in everything from bullet-proof vests to the walls of the Pentagon, polyurea's strength comes from its long-chain molecules.

posted by PlayhousePals 1 year 9 months 3 weeks ago • 1,624 views • 7:09

YouTube: The crazy story of the arbitrary temperature scale used in a tiny minority of countries.

posted by PlayhousePals 1 year 10 months ago • 652 views • 5:24

YouTube: All the large-scale structure in the universe may owe its existence to nothing.

posted by PlayhousePals 1 year 11 months 3 weeks ago • 261 views • 5:31

YouTube: Virtual particles are a way of talking about fields and their interactions as though particles are doing all the work. This is why there is some controversy around using the term 'virtual particles'.... continue reading

posted by PlayhousePals 2 years 2 weeks ago • 21 views • 8:43

YouTube: Mounting evidence suggests a lot of published research is false.

posted by PlayhousePals 2 years 1 month 2 weeks ago • 313 views • 12:22

No GMO's allowed!

posted by PlayhousePals 2 years 4 months 3 weeks ago • 304 views • 9:17

YouTube: What is the specious present? And how do our brains perceive time?

posted by PlayhousePals 2 years 7 months ago • 60 views • 7:53

YouTube: Why is there a bright spot behind spherical objects?

posted by PlayhousePals 2 years 11 months 2 weeks ago • 58 views • 7:20