The Nenet reindeer herders need to move their tent every few days throughout most of the year. Every time they migrate they must pack the whole tent away, drag it across the tundra on sledges, and erect... continue reading

posted by blacklotus90 1 week 5 days ago • 479 views • 32:14

Does a green laser pointer stop working when it is cold? Or does it turn into an invisible laser? That is nice to know for safety reasons if you are using a green laser pointer to point out stars on a... continue reading

posted by blacklotus90 6 months ago • 798 views • 9:01

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 7 months 1 week ago • 940 views • 2:32

On a hike looking for rare limestone endemic plants in Death Valley, we spotted the wreckage of a plane! After several hours of hiking and many interesting plants, we managed to scramble over to the wreck.... continue reading

posted by eric3579 10 months 1 week ago • 1,768 views • 5:01

Mark Rober shows how easily germs can spread using blacklight reactive powder and a classroom of kids.

posted by w1ndex 11 months 3 weeks ago • 200 views • 10:21

"Grover is getting cold out in the snow and seeks Kermits help on how he can get warm..."

posted by ant 1 year 2 months 2 weeks ago • 12 views • 4:50

YouTube description: At night, these parasites crawl onto your bed, bite you and suck your blood. Then they find a nearby hideout where they leave disgusting telltale signs. But these pests have an... continue reading

posted by Aard Vark (oritteropo) 1 year 8 months ago • 1,270 views • 4:22

Out in the vast coldness of outer space, there are planets that travel alone through the darkness without the boundaries of a system. Here’s how this can happen – and why these frozen deserts might... continue reading

posted by w1ndex 2 years 2 months 1 week ago • 324 views • 8:25

This is the story of America's massive forging presses built during the cold war used to build America's most advanced machinery - the Heavy Press Program. Modern airplanes, missiles, helicopters, turbines... continue reading

posted by nanrod 2 years 3 months 2 weeks ago • 525 views • 12:48

YouTube description: Thunderstorm time lapse and spectacular phenomenon with facts and information of where to witness these fascinating sights. Upward lightning, mammatus, sprites, gustnadoes and... continue reading

posted by Aard Vark (oritteropo) 2 years 3 months 2 weeks ago • 494 views • 6:19

"... When nutrients from the ocean depths reach the sunlit surface (like in the Galapagos), life is more productive..."

posted by ant 2 years 7 months ago • 53 views • 2:56

They didn't get the memo about the removal of the electrified fences.

posted by Mordhaus 2 years 8 months 3 weeks ago • 113 views • 7:03

Adam debunks the notion that the Soviets caused the Cuban Missile Crisis.

posted by Mordhaus 2 years 11 months ago • 99 views • 1:05

I built a natural draft furnace to test ideas about how hot a furnace could get without the use of bellows. Natural draft is the flow of air through a furnace due to rising hot air. The hot gasses in the... continue reading

posted by Mordhaus 3 years 4 months 1 week ago • 445 views • 5:46

The Saudis and Iranians have never actually declared war on each other. Instead, they fight indirectly by supporting opposing sides in other countries and inciting conflicts. This is known as proxy warfare. ... continue reading

posted by Mordhaus 3 years 7 months 2 weeks ago • 309 views • 10:19

For nearly 700 years, the shrimpers of Oostduinkerke, Belgium, have been training draft horses to help them pursue the local catch. Typically weighing more than 2,000 pounds, these horses are well suited... continue reading

posted by Mordhaus 3 years 8 months ago • 93 views • 2:39

‘I was stunned when the pieces started falling into place,’ recalls specialist Howard Dixon of the moment an unassuming folio of photographs was presented to him in a restaurant in Texas earlier this year. ... continue reading

posted by Mordhaus 3 years 8 months 1 week ago • 1,172 views • 3:34