Neat!

In 1941, Swiss engineer George de Mestral noticed after a hunting trip that burrs from burdock plants stuck to his pants and his dog’s fur. 

He took the seed and looked at them through a microscope to find that this seed attaches to animal fur via the hooks on its surface to improve distribution.

                               Source: All of Nature on Blogspot

These hooks would latch onto anything loop-shaped, such as the fibers in his pants and his dog’s tangled fur. This inspired him to come up with the ‘Velcro’.

Velcro is a bio-mimicry of this burrs with small flexible hooks attached on its surface to attach to fluffy surfaces.

Although it goes by the name Velcro the generic name is a  hook-and-loop fastener)  

And depending on the load that needs to be held there are different types of hooks that are available:

The sound that the velcro makes when you rip it apart is oddly satisfying. It is made when the loops are ripped apart from the hooks.

It was always in my head that the hooks or the loops would break whenever you would rip it apart. But turns out, they are extremely flexible.

                                                Source

For a long time I believed that this was the end of the story and that’s how far we had gone. But recently when I was trying to mount a board to the wall, I came across the 3M dual lock fasteners.

These use a mushroom shaped hook on both the sides to snap together in place.

                                                  Source

And evidently it turns out the mushroom fastener design were inspired from dragonflies who used it for stability during mating (check source video above for more).

This is great, but since this is made of plastic this surely would fail at higher temperatures. You need something robust to handle higher temperatures, and this is where the Metaklett comes into the picture:

A square metre of this fastener, called Metaklett (made of steel), is capable of supporting 35 tonnes at temperatures up to 800 ºC,  (Video)

There is something exotic in the blend of nature and technology that is manifested in the Velcro, I just cannot put my hand on what it is.

Have a great day!

Injectable bandages

Above: Akhilesh K Gaharwar, Ph.D., of Texas A&M University, demonstrating injectability of nano engineered hydrogels, Credit: Gaharwar Lab, www.akgaharwar.com A gelling agent commonly used in making pastries just got a major promotion. It’s now a key ingredient for new “injectable bandages” that can simulate the structure of human tissue, stop bleeding and promote healing. Potential applications include helping troops wounded in the battlefield. This Texas A&M research is our featured podcast story - Sweet! http://bit.ly/2ILgNBY

Below: Schematic showing injectable bandage composed of 2D nanoparticles and common food additive - kappa carrageenan, Credit: Lokhande, et al.

Paper: www.sciencedirect.com/science/article/pii/S1742706118300564

Is it possible to be involved with the anthropology "community" despite not having a degree in anthro?

I don’t see why not. I think we encourage interdisciplinary work. 

This slender-snouted crocodile skull in Carnegie Museum of Natural History’s Alcohol House was used to determine that each African region had a unique crocodile species. You can see this skull and its story on display at the new We Are Nature. Look for the Alcohol House media interactive in the gallery! 

This post was originally posted on our curatorial assistant’s Instagram, which features specimens in the museum’s historic Alcohol House.

Help Explore Your Own Solar Neighborhood

We’re always making amazing discoveries about the farthest reaches of our universe, but there’s also plenty of unexplored territory much closer to home.

Our “Backyard Worlds: Planet 9” is a citizen science project that asks curious people like you — yes, you there! — to help us spot objects in the area around our own solar system like brown dwarfs. You could even help us figure out if our solar system hosts a mysterious Planet 9!

In 2009, we launched the Wide-field Infrared Survey Explorer (WISE). Infrared radiation is a form of light that humans can’t see, but WISE could. It scans the sky for infrared light, looking for galaxies, stars and asteroids. Later on, scientists started using it to search for near-Earth objects (NEOWISE) like comets and asteroids.

These searches have already turned up so much data that researchers have trouble hunting through all of it. They can’t do it on their own. That’s why we asked everyone to chip in. If you join Backyard Worlds: Planet 9, you’ll learn how to look at noisy images of space and spot previously unidentified objects. 

You’ll figure out how to tell the difference between real objects, like planets and stars, and artifacts. Artifacts are blurry blobs of light that got scattered around in WISE’s instruments while it was looking at the sky. These “optical ghosts” sometimes look like real objects.

Why can’t we use computers to do this, you ask? Well, computers are good at lots of things, like crunching numbers. But when it comes to recognizing when something’s a ghostly artifact and when it’s a real object, humans beat software all the time. After some practice, you’ll be able to recognize which objects are real and which aren’t just by watching them move!

One of the things our citizen scientists look for are brown dwarfs, which are balls of gas too big to be planets and too small to be stars. These objects are some of our nearest neighbors, and scientists think there’s probably a bunch of them floating around nearby, we just haven’t been able to find all of them yet. 

But since Backyard Worlds launched on February 15, 2016, our volunteers have spotted 432 candidate brown dwarfs. We’ve been able to follow up 20 of these with ground-based telescopes so far, and 17 have turned out to be real!

Image Credit: Ryan Trainor, Franklin and Marshall College

How do we know for sure that we’ve spotted actual, bona fide, authentic brown dwarfs? Well, like with any discovery in science, we followed up with more observation. Our team gets time on ground-based observatories like the InfraRed Telescope Facility in Hawaii, the Magellan Telescope in Chile (pictured above) and the Apache Point Observatory in New Mexico and takes a closer look at our candidates. And sure enough, our participants found 17 brown dwarfs!

But we’re not done! There’s still lots of data to go through. In particular, we want your help looking for a potential addition to our solar system’s census: Planet 9. Some scientists think it’s circling somewhere out there past Pluto. No one has seen anything yet, but it could be you! Or drop by and contribute to our other citizen science projects like Disk Detective.

Congratulations to the citizen scientists who spotted these 17 brown dwarfs: Dan Caselden, Rosa Castro, Guillaume Colin, Sam Deen, Bob Fletcher, Sam Goodman, Les Hamlet, Khasan Mokaev, Jörg Schümann and Tamara Stajic.

Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com.

People horrifically fucking up facts about evolution and genetics too support their stupid beliefs or to seem smart and “rational” is probably one of my big pet peeves 

This Medieval Italian Man Replaced His Amputated Hand With a Weapon

Archaeologists have found a fascinating puzzle in the shape of a man’s remains dating back to medieval Italy. It looks like this guy went through life with a knife attached to his arm, in place of his amputated hand.

The skeleton in question was found in a Longobard necropolis in the north of Italy, dating back to around the 6th to 8th centuries CE. Hundreds of skeletons were buried there, as well as a headless horse and several greyhounds, but this particular skeleton stood out.

He was an older male, aged between 40 and 50, and his right arm had been amputated around the mid-forearm.

The researchers, led by archaeologist Ileana Micarelli of Sapienza University in Rome, determined that the hand had been removed by blunt force trauma, but exactly how or why is impossible to tell. Read more.

this is what chickens smell like

So I stumbled onto the Etsy shop of this academic who–in real life–is an expert on cuneiform–and on the side, makes little trinkets with Sumerian on them and OH MAN THIS SHOP HAS MADE MY ENTIRE WEEK For the price of about thirty bucks, you too can have a clay necklace that says “Like a farting butt, the mouth brings forth too many words” in the oldest written language on earth https://www.etsy.com/listing/537034173/choose-your-words-carefully-like-a?ref=shop_home_active_23

Or a necklace that declares “I have ferocious features that exude sexiness” https://www.etsy.com/listing/540406774/i-have-ferocious-features-that-exude?ref=shop_home_active_54 Or be the ultimate hipster and anti-capitalist before capitalism even existed with “Wanting more riches when already wealthy offends the gods”  https://www.etsy.com/listing/543598245/wanting-more-riches-when-already-wealthy?ref=shop_home_active_6

Sumerian erotic poetry? Got it. Sumerian drinking songs? Yep. A little something for everyone on your Akitu gift list.