Rosetta’s lander lasted just 60 hours on a comet before bouncing into the dark shadows of a cliff, where its solar panels couldn’t power the spacecraft. Why didn’t it carry a more reliable power source, say a nuclear battery like one that’s unfailingly fueled Voyager for decades? It’s a simple question with a fascinating answer, one that begins with the Cold War and ends with the future space exploration. Read more…
View post:
We Are Running Out of the Nuclear Fuel That Powers Space Travel
Is o nly going up in the elevator getting you down? Not for much longer: ThyssenKrupp, the German steel and engineering company, has announced that it’s building the next generation of elevators that will use magnetic levitation to travel up, down and side-to-side at speed in the buildings of the future. Read more…
See more here:
Future Elevators Will Use Maglev to Go Up, Down—and Sideways
The world’s tallest roller coaster won’t even be made until 2017 and this is just a demo video of what the roller coaster is going to feel like but I’m already scared. Skyscraper at Skyplex in Orlando will be the tallest roller coaster in the world at over 500 feet tall and you ride the thing all. the. way. down. Read more…
Read the original post:
The first demo video of the world’s tallest roller coaster is terrifying
MTorrice writes: Many drugs that treat bacterial and fungal infections were found in microbes growing in the dirt. These organisms synthesize the compounds to fend off other bacteria and fungi around them. To find possible new drugs, chemists try to coax newly discovered microbial species to start making their arsenal of antimicrobial chemicals in the lab. But fungi can be stubborn, producing just a small set of already-known compounds. Now, one team of chemists has hit upon a curiously effective and consistent trick to prod the organisms to start synthesizing novel molecules: Cheerios inside bags. Scientists grew a soil fungus for four weeks in a bag full of Cheerios and discovered a new compound that can block biofilm formation by an infectious yeast. The chemists claim that Cheerios are by far the best in the cereal aisle at growing chemically productive fungi. Read more of this story at Slashdot.
Read More:
Chemists Grow Soil Fungus On Cheerios, Discover New Antifungal Compounds
Thomas Eric Duncan, the first person to have been diagnosed in the U.S. with Ebola, and who subsequently died of the disease, was treated at Texas Health Presbyterian Hospital in Dallas. Now, in a second diagnosis for the U.S, an unidentified health-care worker from the hospital has tested positive for Ebola as well. According to the linked Reuters story, Texas officials did not identify the worker or give any details about the person, but CNN said it was a woman nurse. The worker was wearing full protective gear when in contact with Duncan, Texas Health Resources chief clinical officer Dan Varga told a news conference. “We are very concerned, ” Varga said. “We don’t have a full analysis of all of the care. We are going through that right now.” … The worker was self-monitoring and has not worked during the last two days, Varga said. The worker was taking their own temperature twice a day and, as a result of the monitoring, the worker informed the hospital of a fever and was isolated immediately upon their arrival, the hospital said in a statement. (Also covered by the Associated Press, as carried by the Boston Globe, which notes that “If the preliminary diagnosis is confirmed, it would be the first known case of the disease being contracted or transmitted in the U.S.”) Read more of this story at Slashdot.
concertina226 writes Harvard scientists have invented a new artificial spleen that is able to clear toxins, fungi and deadly pathogens such as Ebola from human blood, which could potentially save millions of lives. When antibiotics are used to kill them, dying viruses release toxins in the blood that begin to multiply quickly, causing sepsis, a life-threatening condition whereby the immune system overreacts, causing blood clotting, organ damage and inflammation. To overcome this, researchers have invented a “biospleen”, a device similar to a dialysis machine that makes use of magnetic nanobeads measuring 128 nanometres in diameter (one-five hundredths the width of a single human hair) coated with mannose-binding lectin (MBL), a type of genetically engineered human blood protein. Read more of this story at Slashdot.
Read More:
Artificial Spleen Removes Ebola, HIV Viruses and Toxins From Blood Using Magnets
Taco Cowboy sends this report from Vox: One of the big mysteries in the Ebola outbreak in West Africa is where the virus came from in the first place — and whether it’s changed in any significant ways. … In a new paper in Science (abstract), researchers reveal that they have sequenced the genomes of Ebola from 78 patients in Sierra Leone who contracted the disease in May and June. Those sequences revealed some 300 mutations specific to this outbreak. Among their findings, the researchers discovered that the current viral strains come from a related strain that left Central Africa within the past ten years. … Using genetic sequences from current and previous outbreaks, the researchers mapped out a family tree that puts a common ancestor of the recent West African outbreak some place in Central Africa roughly around 2004. This contradicts an earlier hypothesis that the virus had been hanging around West Africa for much longer than that. Researchers are also planning to study the mutations to see if any of them are affecting Ebola’s recent behavior. For example, this outbreak has had a higher transmission rate and lower death rate than others, and researchers are curious if any of these mutations are related to that. … The scientific paper on Ebola is also a sad reminder of the toll that the virus has taken on those working on the front lines. Five of the authors died of Ebola before it was published. Read more of this story at Slashdot.
We’ve been able to grow organs in labs for some time now. But what if you could grow them directly inside a living body just by injecting a few cells? It looks like now we can, at least in a limited way. Read more…
More:
Scientists Just Grew a Whole Organ Inside an Animal For the First Time
This beetle looks like it’s been given a lick with a paintbrush—but in fact, it’s covered in paper-thin scales that are brilliant white, and reflect more light than anything of a similar thickness that can be made by humans. Read more…
More here:
This Beetle Has a Thin Coating Whiter Than Anything Humans Can Make
brindafella (702231) writes Australian scientists have accidentally made one of the most significant discoveries in stem cell research, by studying the transparent embryos of Zebrafish (Danio rerio). The fish can be photographed and their development studied over time, and the movies can be played backwards, to track back from key developmental stages to find the stem cell basis for various traits of the fish. This fundamental research started by studying muscles, but the blood stem cell breakthrough was a bonus. They’ve found out how hematopoietic stem cells (HSC), among the most important stem cells found in blood and bone marrow, is formed. The scientists are based at the Australian Regenerative Medicine Institute at Monash University. The research has been published in the Nature medical journal. This discovery could lead to the production of self-renewing stem cells in the lab to treat multiple blood disorders and diseases. Read more of this story at Slashdot.
See more here:
Transparent Fish Lead to Stem Cell Research Breakthrough