When it was switched off, they came down. The researchers could actually control spiders' altitude with electricity. Researchers hope the technology will further our understanding of the brain, but lawmakers may not be ready for the ethical challenges.
How Did We Learn to Fly Like the Birds?
The image of an undead brain coming back to live again is the stuff of science fiction. Not just any science fiction, specifically B-grade sci fi. What instantly springs to mind is the black-and-white horrors of films like Fiend Without a Face. Bad acting. Plastic monstrosities. Visible strings.
And a spinal cord that, for some reason, is also a tentacle? But like any good science fiction, it's only a matter of time before some manner of it seeps into our reality. This week's Nature published the findings of researchers who managed to restore function to pigs' brains that were clinically dead. At least, what we once thought of as dead. The researchers did not hail from House Greyjoy — "What is dead may never die" — but came largely from the Yale School of Medicine.
They connected 32 pig brains to a system called Brain Ex. Brain Ex is an artificial perfusion system — that is, a system that takes over the functions normally regulated by the organ. The pigs had been killed four hours earlier at a U. Department of Agriculture slaughterhouse; their brains completely removed from the skulls. Brain Ex pumped an experiment solution into the brain that essentially mimic blood flow. It brought oxygen and nutrients to the tissues, giving brain cells the resources to begin many normal functions.
The cells began consuming and metabolizing sugars. The brains' immune systems kicked in. Neuron samples could carry an electrical signal. Some brain cells even responded to drugs. The researchers have managed to keep some brains alive for up to 36 hours, and currently do not know if Brain Ex can have sustained the brains longer. As a control, other brains received either a fake solution or no solution at all.
None revived brain activity and deteriorated as normal. The researchers hope the technology can enhance our ability to study the brain and its cellular functions. One of the main avenues of such studies would be brain disorders and diseases. This could point the way to developing new of treatments for the likes of brain injuries, Alzheimer's, Huntington's, and neurodegenerative conditions.
Why planes can’t fly when it’s too hot, and other ways our civilization can’t take the heat
It immediately offers a much better model for studying the human brain, which is extraordinarily important, given the vast amount of human suffering from diseases of the mind [and] brain," Nita Farahany, the bioethicists at the Duke University School of Law who wrote the study's commentary, told National Geographic.
Before anyone gets an Island of Dr. Moreau vibe, it's worth noting that the brains did not approach neural activity anywhere near consciousness. The Brain Ex solution contained chemicals that prevented neurons from firing. To be extra cautious, the researchers also monitored the brains for any such activity and were prepared to administer an anesthetic should they have seen signs of consciousness.
Even so, the research signals a massive debate to come regarding medical ethics and our definition of death. Most countries define death, clinically speaking, as the irreversible loss of brain or circulatory function. This definition was already at odds with some folk- and value-centric understandings, but where do we go if it becomes possible to reverse clinical death with artificial perfusion? Here you are: beds for tired travelers, massagers and generous legroom, childcare services and a bar plus shower cabinets to make you feel alright. This is what passengers hope they will see on board in the not-too-distant future.
Should this become a reality, passenger numbers are bound to soar further. German automakers are promising to ramp up electric vehicle production, while Paris and London are pledging to go all-electric by So why is China beating Europe at the e-mobility game? Germany's long-awaited high-speed rail link between Berlin and Munich has finally been inaugurated. Air travel is bad for the climate - but it doesn't have to be. Climate-friendly flight routes and renewable jet fuel could make flying in planes way more environmentally friendly - this would just need to be implemented.
The devastating effects of climate change are becoming apparent — and the world has begun taking action. But the frequency of extreme weather events has shown we are starting to run out of time. Air traffic is on the rise worldwide, picking up by 6. But not all carriers and airports have profited from the trend, or at least not to the same extent.
Often, big money is made elsewhere. The Netherlands wants the EU to place a tax on kerosene-based jet fuel to end what it calls the undertaxation of the aviation industry and to fight climate change. The lofty goal could prove a challenge to implement.
The international seahorse trade out of West Africa is booming. The animals are used in dried form in soups, teas and rice wine. But growing demand is putting these little fish at risk of extinction. Swedes seem to be following climate activist Greta Thunberg's example in shunning air travel.
The percentage that opted to take a train rather than fly has doubled in a year and a half. Flight shame may be at work. On this week's show Cameroon's parrot hospital, turning phones into art and crowdfunding solar panels in Nigeria.
More info OK. Wrong language? Change it here DW. COM has chosen English as your language setting. COM in 30 languages. Deutsche Welle. Audiotrainer Deutschtrainer Die Bienenretter.
Mark avijihybihyl.ga Blog: Why we think giant pterosaurs could fly
Environment To fly or not to fly? The environmental cost of air travel Though air travel is more popular than ever, the vast majority of people in the world have never been on a plane. Just go in and inquire whether they carry those fine Solitude flies available on this site.
Have them give us a call and we will supply them with a full stringer of customer service. You win, they win, we win and the fish lose cause they are gonna get caught. Doesn't get any better than that. Truly monster brown trout are very efficient eaters. Rather than take insect after insect during a hatch, they consume one meaty meal.
Bumblebees Can’t Fly
Mark Shelton was in my shop today and I showed him this picture. We love that streamer pattern for lake browns!
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