When grown-up jellyfish love each other very much, they make huge numbers of teeny-tiny potato-shaped larvae. Those larvae grow into little polyps that cling to rocks and catch prey with their stinging... continue reading
posted by newtboy 1 month 2 weeks ago • 38 views • 4:39Videos (89) | Sift Talk (0) | Blogs (0) | Comments (1000) |
Accidentally filming triboluminescence by shooting two air cannons loaded with glass spheres directly at each other. https://en.wikipedia.org/wiki/Triboluminescence
posted by newtboy 2 months 3 weeks ago • 122 views • 22:27Each year, billions and billions of people are injured crossing the street because they're distracted on their phones. So Jimmy sent his friend and YouTube superstar Mark Rober out to save the lives of... continue reading
posted by BSR 1 year 1 week ago • 36 views • 4:11Alaska has cancelled this year's snow crab harvest for the first time ever after 90% of the snow crabs disappeared. BILLIONS of snow crabs vanished from the Bering Sea. By why? Why did billions of crabs... continue reading
posted by newtboy 1 year 5 months 3 weeks ago • 104 views • 11:29"Olympic sports are contested in the Summer Olympic Games and Winter Olympic Games. They are Summer Olympics and Winter Olympics. Besides, there are two more Olympics. They are Special Olympics and Paralympics.... continue reading
posted by ant 2 years 8 months ago • 15 views • 2:40From Youtube, "By the end of the 21st century, humanity is becoming desperate. Decades of heatwaves and droughts have led to unusually poor harvests, while the warming oceans yield fewer fish each year.... continue reading
posted by w1ndex 3 years 6 months ago • 510 views • 9:10The historian Allan Lichtman was the lonely forecaster who predicted Mr. Trump’s victory in 2016 — and also prophesied the president would be impeached. That’s two for two. But Professor Lichtman’s... continue reading
posted by mxxcon 3 years 8 months 3 weeks ago • 12 views • 7:14From 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 3 years 9 months 2 weeks ago • 82 views • 10:36Createk third-arm : Supernumerary robotic arm powered by magnetorheological clutches and an hydrostatic transmission. Fast enough to compensate for human motions while being safe for physical human-robot interaction. ... continue reading
posted by newtboy 3 years 10 months 1 week ago • 123 views • 2:51Each season has its own distinctive flowers, and in Japan early May sees the wisteria blossom. Many people travel at that time to see fine examples of wisteria, a spreading vine that can be arranged over... continue reading
posted by newtboy 3 years 10 months 3 weeks ago • 388 views • 4:28NASA'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 3 years 11 months 3 weeks ago • 100 views • 10:41Gricean Maxims are a vital part of how we understand each other: a set of... well, maybe "rules" is a bit strong. They're guidelines that we follow without realising it. And it's the reason that "asbestos-free... continue reading
posted by eric3579 3 years 11 months 3 weeks ago • 1,082 views • 5:33YouTube description: Ahmed Darwish el Fakhouri spends his days surrounded by olive oil soap stacked up high—each precious bar waiting to be wrapped and sold after a drying out period of two to three... continue reading
posted by Aard Vark (oritteropo) 4 years 1 month 3 weeks ago • 351 views • 2:24From Youtube, "In nearly every corner of the Earth, ants wage war against each other. Their weapons are what nature gave them. Some have strong armour, deadly stingers or sharp mandibles. And then there... continue reading
posted by w1ndex 4 years 6 months 4 weeks ago • 521 views • 9:23YouTube description: In 1951, the American F-86 Sabre went head-to-head with the Soviet MiG-15 in the skies above North Korea. Both sides wanted to capture examples of each others aircraft. The Soviets... continue reading
posted by Aard Vark (oritteropo) 4 years 7 months 1 week ago • 824 views • 6:07YouTube description: Citheronia regalis is a giant silk moth...though these don't actually produce silk, which is why it's better to go by their family name saturniidae. Citheronia regalis actually... continue reading
posted by Aard Vark (oritteropo) 4 years 7 months 1 week ago • 1,000 views • 3:59YT: The International Phonetic Alphabet: one sound for each symbol, and one symbol for each sound. Except for the sounds we can't make. https://en.wikipedia.org/wiki/International_Phonetic_Alphabet
posted by Fantomas 4 years 7 months 3 weeks ago • 883 views • 6:31YouTube description: A bisected grape in the microwave makes plasma. But how does it work? A grape is the right size and refractive index to trap microwaves inside it. When you place two (or two halves)... continue reading
posted by Aard Vark (oritteropo) 5 years 2 months ago • 732 views • 8:16YouTube description: A microscopic examination of dirty water before boiling and after boiling. The magnification in each shot is shown in the bottom right hand corner. Camera - Nikon D3300 ... continue reading
posted by Aard Vark (oritteropo) 5 years 2 months 3 weeks ago • 1,734 views • 4:33