In Laguna, Brazil, the local fishermen rely on dolphins to help them with their yearly fish catch.
“About 200 local artisanal fishermen are almost entirely reliant on the dolphins for catching their fish,” study researcher Fábio Daura-Jorge, of the Federal University of Santa Catarina, in Brazil, wrote in a statement sent to LiveScience. “The fishermen do not fish without the assistance of the dolphins and know the individual animals from their natural marks and can recognize them by eye.”
Scientists had known that dolphins work together to herd groups of mullet, a fish that’s an important source of food for local fishermen, toward a line of fishermen in boats or knee-deep water. Then the dolphins signal with specialized head or tail slaps when and where the fishermen should throw their nets. The cooperation is helpful to both parties, researchers said. The two wouldn’t survive without each other.
On a stretch of the Ayeyarwady river, also known as the Irrawaddy river, near Myanmar’s Mandalay, fishermen from six villages work hand-in-fin with 26 Irrawaddy dolphins in a unique collaboration. Taught to do so since childhood, the fishermen cooperatively fish the river with the assistance of the dolphins. The tradition, origin unknown, is said to have been in practice since the 1860s.
The fishermen summon the dolphins by tapping a pointed stick on the side of their wooden boats while making a cooing sound. The dolphins herd fish in the surrounding waters towards the boat. A wave of their tails above the water signals to the fishermen that it is time for the net to be cast. When practising this cooperative fishing technique, the fishermen are said to be able to catch six times more fish than when done individually. The dolphins also benefit from the easy catch of fish that escape the net.
On this day, 30 July 1766, silver miners in Real Del Monte, Mexico, went on strike against a 25% pay cut in the first recorded strike against an employer in North American history. They faced down repression from the bosses’ private army and held out until September, when the employers caved in.
We chose this date to launch WCH 5 years ago. We have launched a birthday fundraising appeal to make our project sustainable for the future. Please check it out on our website: https://workingclasshistory.com/2019/07/30/working-class-history-turns-5/
Pictured is the mine today https://www.facebook.com/workingclasshistory/photos/a.296224173896073/1178093795709102/?type=3
The Egyptian Ministry of Antiquities announced on Wednesday 11 December, 2019 that it has discovered a rare statue of King Ramesses II during excavations near Giza Pyramids west of the capital Cairo.
In a statement, the ministry said that the statue was unearthed during excavation works the ministry’s teams started last week inside a piece of land owned by a citizen near the great temple of Ptah in
at Mit Rahinah (Memphis).
The ministry said that the land owner was arrested earlier in December while stealthily carrying out excavations at his land.
From the South, to the Midwest, to infinity and beyond. The Orion spacecraft for Artemis I has several stops to make before heading out into the expanse, and it can’t go to the Moon until it stops in Ohio. It landed at the Mansfield Lahm Regional Airport on Nov. 24, and then it was transferred to Plum Brook Station where it will undergo a series of environmental tests over the next four months to make sure it’s ready for space. Here are the highlights of its journey so far.
It’s a bird? It’s a whale? It’s the Super Guppy!
The 40-degree-and-extremely-windy weather couldn’t stop the massive crowd at Mansfield from waiting hours to see the Super Guppy land. Families huddled together as they waited, some decked out in NASA gear, including one astronaut costume complete with a helmet. Despite the delays, about 1,500 people held out to watch the bulbous airplane touch down.
Buckle up. It’s time for an extremely safe ride.
After Orion safely made it to Ohio, the next step was transporting it 41 miles to Plum Brook Station. It was loaded onto a massive truck to make the trip, and the drive lasted several hours as it slowly maneuvered the rural route to the facility. The 130-foot, 38-wheel truck hit a peak speed of about 20 miles per hour. It was the largest load ever driven through the state, and more than 700 utility lines were raised or moved in preparation to let the vehicle pass.
Calling us clean freaks would be an understatement.
Any person who even thinks about breathing near Orion has to be suited up. We’re talking “bunny” suit, shoe covers, beard covers, hoods, latex gloves – the works. One of our top priorities is keeping Orion clean during testing to prevent contaminants from sticking to the vehicle’s surface. These substances could cause issues for the capsule during testing and, more importantly, later during its flight around the Moon.
And liftoff of Orion… via crane.
On the ceiling of the Space Environments Complex at Plum Brook Station is a colossal crane used to move large pieces of space hardware into position for testing. It’s an important tool during pretest work, as it is used to lift Orion from the “verticator”—the name we use for the massive contraption used to rotate the vehicle from its laying down position into an upright testing orientation. After liftoff from the verticator, technicians then used the crane to install the spacecraft inside the Heat Flux System for testing.
It’s really not tin foil.
Although it looks like tin foil, the metallic material wrapped around Orion and the Heat Flux System—the bird cage-looking hardware encapsulating the spacecraft—is a material called Mylar. It’s used as a thermal barrier to help control which areas of the spacecraft get heated or cooled during testing. This helps our team avoid wasting energy heating and cooling spots unnecessarily.
Bake at 300° for 63 days.
It took a little over a week to prep Orion for its thermal test in the vacuum chamber. Now begins the 63-day process of heating and cooling (ranging from -250° to 300° Fahrenheit) the capsule to ensure it’s ready to withstand the journey around the Moon and back.
View more images of Orion’s transportation and preparation here.
Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com.
This blog is mostly so I can vent my feelings and share my interests. Other than that, I am nothing special.
If you don't like Left Wing political thought and philosophy, all things related to horror, the supernatural, the grotesque, guns or the strange, then get the fuck out. I just warned you.
