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 2 years 2 weeks ago • 981 views • 2:32

From Youtube, "This video is part of a series about climate change supported by Breakthrough Energy – a coalition founded by Bill Gates, that is working to expand clean-energy investment and support... continue reading

posted by w1ndex 2 years 1 month ago • 80 views • 10:36

YouTube description: It's a terrible idea to try to extinguish burning metal with a water or CO2 fire extinguisher. Steve Mould shows why.

posted by Aard Vark (oritteropo) 3 years 7 months ago • 1,516 views • 7:25

Electric cars are touted as a solution for reducing emissions and improving the environmental impacts of transportation, but are electric cars actually any better for the environment than gasoline cars?... continue reading

posted by newtboy 3 years 9 months 2 weeks ago • 474 views • 13:47

YouTube description: Let's find out how they put 3D images into glass objects. Known as a 'Bubblegram', vitrography or sub-surface laser engraving, this technology has been around for a very long time... continue reading

posted by Aard Vark (oritteropo) 4 years 4 months ago • 308 views • 6:28

At the old hut site (the new one being temporarily cut off by flooding) I made lime mortar from the shells of rainforest snails by firing them in a kiln, slaking them in water, mixing them into lime putty.... continue reading

posted by Mordhaus 4 years 5 months 1 week ago • 405 views • 7:08

Humans emit roughly 30 to 40 billion tons of the greenhouse gas, carbon dioxide, into the atmosphere each year. If we keep it up, Earth will continue to heat up and ultimately devastate our way of life. ... continue reading

posted by newtboy 5 years 2 months 2 weeks ago • 107 views • 2:18

Graphite is one of the many interesting forms of carbon. And carbon I love! It morphs into coal, diamond, graphite, graphene, fullerenes, nanotubes, buckyballs and more, all with their own set of fantastic... continue reading

posted by Mordhaus 6 years 3 weeks ago • 1,653 views • 4:58

YouTube description: What happens when you pour liquid nitrogen on a flame? What about when you blow on the flame with a cup in the way? Try these five unusual ways to extinguish a candle. Pour out... continue reading

posted by Aard Vark (oritteropo) 6 years 6 months ago • 272 views • 5:17

"It's Reefer Badness out there!"

posted by PlayhousePals 6 years 8 months 3 weeks ago • 254 views • 5:46

"Over 99% of all the animal species that have ever lived are now extinct."

posted by PlayhousePals 7 years 3 months 3 weeks ago • 363 views • 4:27

Common misconceptions about climate change. References below: For CO2, sea levels, Arctic sea ice, Antarctic and Greenland land ice: http://climate.nasa.gov Satellite data shows that ground-based... continue reading

posted by cricket 7 years 10 months 3 weeks ago • 865 views • 6:50