Ms. Frizzle is the best teacher.
Reverse Arrow Optical Illusion
Whoa, what sorcery is this?
Maric V explains that it’s a combination of refraction and focal point, in the video caption: https://www.youtube.com/watch?v=G303o8pJzls
Moulay Ismail ibn Sharif succeeded to the sultanate of Morocco after his brother fell from a horse and died in 1672. Twenty-six when he became the Sharifian Emperor, Moulay Ismael “the Bloodthirsty” — as he was called — went on to expand his holding in a remarkable reign. His armies conquered neighboring territories and fought off the Ottomans (eventually forcing them to recognize Moroccan independence), and the emperor went on a building spree to make Meknes a rival to Versailles, with French engineers to help.
Moulay Ismael also had a prodigious capacity for cruelty. He legendarily ordered that the walls of Meknes be decorated with the heads of 10,000 enemy soldiers. He also sponsored the Barbary pirates, who engaged the states of Europe in a protracted and costly low-grade war, drove the American colonies to form the first navy in North America, and pushed the English and Spanish from Moroccan territory.
But Moulay Ismael is probably best known to history because of his prodigious capacity to reproduce. The emperor had a thing for children,… well, for having sons, that is.
According to the Guinness Book of World Records, Moulay Ismael, with four wives and at least 500 concubines, sired an estimated 1042 children (they recently raised their estimate from 888). That feat is even more incredible when one notes that Moulay Ismael, demonstrating just how deep his cruelty went, ordered that all the female infants of his concubines be smothered when they were born by their midwives.
Anonymous asked: Can you explain why Europeans were much more technologically advanced than the indigenous populations of Africa? I mean, these cultures hadn't even invented sewage systems, which is something the Romans were able to design and implement in 800-735 BC (a long fucking time before "the white man" colonized it)... I mean fuck, without "the white man", they would probably still be in the fucking bronze age.
I don’t really know what kind of history books bigots like you read.
The Great Libraries of Timbuktu? The steel metallurgy of the Haya? Dentistry? Caesarean section? Premature neonatal care? Mathematics, architecture, engineering?
I know it’s hard for a racist like you who imagines “technological advancement” to be some kind of end-all-be-all, or proof of some “inherent intelligence”. I know, I know. It’s hard to imagine, but Europeans have been drawing knowledge from everyone around them since the dawn of time. What did you think ended the Dark Ages?
Your magical (read: white supremacist) idea of a purely 'white' Rome never existed.
The Minoan culture on the island of Crete between 1500-1700 B.C.E. had a highly developed waste management system. They had very advanced plumbing and designed places to dispose of organic wastes. Knossos, the capital city, had a central courtyard with baths that were filled and emptied using terra-cotta pipes. This piping system is similar to techniques used today. They had large sewers built of stone.”
In case you needed further clarification, neither the Minoans nor other (later) Greeks were ethnically uniform. They also had the first flush toilets, dating back to 18th century B.C.E. They had flushing toilets, with wooden seats and an overhead reservoir. The Minoan royals were the last group to use flushing toilets until the re-development of that technology in 1596.
Oh, and look the Mayans had indoor plumbing, acqueducts, and pressurized water too. I mean, you can ignore that the area Mayans lived in had little to few rivers, no lakes or standing water, nor other sources of running water, while simultaneously dealing with monsoons and flooding due to one of the heaviest yearly rainfalls in the Americas.
Classic Maya even used household water filters using locally abundant limestone carved into a porous cylinder, made so as to work in a manner strikingly similar to modern ceramic water filters.
Of course, by this time millenia later none of your precious “white people” had developed any methods besides shitting in pots.Continuing, the earliest archaeological record of an advanced system of drainage comes from the Indus Valley Civilization from around 3100 B.C.E in what is now Pakistan and North India. By 2500 B.C.E (almost 5,000 years ago), they had highly developed drainage systems where wastewater from each house flowed into the main drain.All houses in the major cities of Harappa and Mohenjo−daro had access to water and drainage facilities. Waste water was directed to covered drains which lined the major streets directed to covered drains, which also lined all major streets. Each home had its own private drinking well and its own private bathroom. The mains that carried wastewater to a cesspit were tall enough for people to walk through. Reservoirs, a central drainage system, fresh water pumped into the homes. Pools. Baths.It was made from bricks smoothened and joined together seamlessly. The expert masonry kept the sewer watertight. Drops at regular intervals acted like an automatic cleaning device.
Filters for solid waste.Sorry, what were the British doing up until like, 200 years ago? Shitting in the streets? Oh yeah.I mean, I could get into how by the Shang Dynasty (roughly 1600 B.C.E.), China had sophisticated plumbing including pressure inverted siphons.
Or into the city of Amarna, Ancient Egypt. Or Persepolis, Persia and the Achaemenids in 600 B.C.E.But, I mean, it sounds like the only one still in the Bronze Age is you.
Epic Slow-Mo Predators (Bassnectar Dubstep Remix)
The Mongolian steppe is home to predators large and small. Meet golden eagles, fierce hedgehogs, and more in this slow-motion video, which features stunning footage from National Geographic’s “Secret Life of Predators” television series.
See more videos from “Secret Life of Predators”:
via National Geographic.
Winter is coming.
This house is probably very close to a lake, we can see what looks like a shoreline in the upper left. During winter ice will build up along the shores, breaking up into smaller pieces from the currents and stuff, leaving it more of a pile loose ice chips, than a solid plate. During high speed wind events these slushy loose piles of can be driven up onto the dry land. Sometimes resulting in some property damage, other times just leaving an annoying mess.
You can basically just assume, without even knowing what this thing is, that it is from Australia.
Fuck that shit this thing is a pokemon
Look at it’s skinny little legs!
what the fuck is it
holy shit its the jumping mice from coraline
What is ittt
It looks like the little rodent that scar is playing with before eating it in The Lion King
This little fellow is either a Kangaroo mouse (genus Microdipodops) or a Kangaroo rat (genus Dipodomys). However, despite the names, and obvious looks, both are native to western North America (not Australia or the Pokéverse ) and are rodents, not marsupials. Also, they’re damn cute. :)
More Dean Leshin quotes.
So… you heat up Mars soil and water falls out?
Why isn’t Curiosity leaving a trail of water behind it?
Why didn’t the Mars landing have, like, a burst of water?
How hot does this Mars soil have to be, exactly?
Could Curiosity use its lasers to make us some Mars water RIGHT NOW?
Yes, but Curiosity had to heat the samples to about 1,535 degrees Fahrenheit to get the water to boil out.
If this doesn’t fit on your blog, you’re doing it wrong.
I never knew how much I wanted this. When I inevitably teach a lot of high school science courses I must use this gif.
I fucking love this
wow this is the best thing ive ever seen
Methane butane propane ethane woooh
Oh guys, the original video this came from… the whole thing is just as fab.
THE RELATIONSHIP BETWEEN WOLVES AND RAVENS
Ravens and wolves form social attachments with each other and take huge advantage of each other.
Both animals eat meat. When wolves killed a prey, ravens eat from the left over cadaver and scavenge it. Also, ravens lead wolves to preys or cadavers. The ravens fly and the wolves follow. Ravens also alert wolves to dangers.
They also play with each other. For example the ravens dive at the wolves and then speed away or peck their tails to try to get the wolves to chase them, or wolf cubs chasing after teasing ravens.
Dr. L. David Mech wrote in ‘The Wolf: The Ecology and Behaviour of an Endangered Species’: “It appears that the wolf and the raven have reached an adjustment in their relationships such that each creature is rewarded in some way by the presence of the other and that each is fully aware of the other’s capabilities.”
Also very interesting: Bernd Heinrich wrote in ‘Mind of the Raven: Investigations and Adventures with Wolf-Birds’: “Ravens can be attracted to wolf howls. The wolves’ howls before they go on a hunt, and it is a signal that the birds learn to heed. Conversely, wolves may respond to certain raven vocalizations or behavior that indicate prey. The raven-wolf association may be close to a symbiosis that benefits the wolves and ravens alike. At a kill site, the birds are more suspicious and alert than wolves. The birds serve the wolves as extra eyes and ears.”
(Picture by Michael S. Nolan)
Geological detectives are piecing together an intriguing seafloor puzzle. The Indian Ocean and some of its islands, scientists say, may lie on top of the remains of an ancient continent pulled apart by plate tectonics between 50 million and 100 million years ago. Painstaking detective work involving gravity mapping, rock analysis, and plate movement reconstruction has led researchers to conclude that several places in the Indian Ocean, now far apart, conceal the remnants of a prehistoric land mass they have named Mauritia. In fact, they say, the Indian Ocean could be “littered” with such continental fragments, now obscured by lava erupted by underwater volcanoes.
The Seychelles, an archipelago of 115 islands about 1500 kilometers east of Africa, are something of a geological curiosity. Although a few of Earth’s largest islands, such as Greenland, are composed of the same continental crust as the mainland, most islands are made of a denser, chemically distinct oceanic crust, created midocean by magma welling up beneath separating tectonic plates. Geologists think they separated from the Indian subcontinent 80 million to 90 million years ago.
But those islands might not be so unique. Researchers from Norway, Germany, and Britain, writing in Nature Geoscience, now suggest that the Indian Ocean is harboring other fragments of ancient continental crust. Those fragments, the researchers say, lie buried beneath more recent oceanic crust erupted by underwater volcanoes.