Put a fruit fly larva in a spacelike vacuum, and the results aren’t pretty. Within a matter of minutes, the animal will collapse into a crinkled, lifeless husk. Now, researchers have found a way to protect the bugs: Bombard them with electrons, which form a "nano-suit" around their bodies. The advance could help scientists take high-resolution photographs of tiny living organisms. It also suggests a new way that creatures could survive the harsh conditions of outer space and may even lead to new space travel technology for humans.
Snapping a picture with a nanometer-level resolution of the proboscis or muscle cells of a fruit fly isn’t easy—in fact, it’s deadly. Scientists have to use a scanning electron microscope, which must peer at objects in a vacuum because air molecules absorb the electrons that the microscope depends on to take the picture. Only a tiny number of creatures, such as the famously hardy tardigrade, can survive the process. Most other bugs die quickly of dehydration as the vacuum sucks the water out of their bodies.
A fruit fly larva is one such victim. But when Takahiko Hariyama of the Hamamatsu University School of Medicine in Japan and his colleagues placed the millimeter-sized larva in a scanning electron microscope and fired electrons at it, they found that the young fly wiggled in place for an hour as if everything was fine. When they put another larva in the same vacuum and let it sit there for an hour before bombarding it with the microscope’s electrons, it predictably dehydrated to death. Somehow, the electron stream was keeping the larva alive and so unscathed that it later grew to become a healthy fruit fly.
The scientists then used the microscope to peer closely at the edge of the insects’ skin. They found that the energy from the electrons changed the thin film on the larvae’s skin, causing its molecules to link together—a process called polymerization. The result was a layer—only 50- to 100-billionths of a meter thick—that was flexible enough to allow the larva to move, but solid enough to keep its gasses and liquids from escaping. "Even if we touched the surface [of the layer]," Hariyama says, "the surface did not break by our mechanical touch." It was almost like a miniature spacesuit.
Increased tax subsidies for politically correct media 2015-03-29 22:08
On Dec 9 last year I translated a random snapshot of the biggest newspaper in Sweden. The headlines alone spoke for themselves. It was, simply put, an orgy of political correctness, obvious attempts at emotional manipulation and general national self-loathing. In other words, a typical Swedish newspaper on any given day.
As more and more readers are waking up to the ...
When obeying the law and supporting yourself is racist 2015-03-29 22:56
There is a huge scandal in the municipality of Ă„lmhult in Sweden. It has been revealed that there is a letter that may have been sent from the municipality offices to newly arrived immigrants informing them that the law applies to them and that theyâ€™re expected to eventually go off the dole and start pulling their own weight in society.
New political weapon: Threat to unleash immigrant invasion 2015-03-29 22:05
Youtube description: Threatening to bombard a country with illegal immigrants has become quite the bargaining chip in political quarrels, as Polly Boiko explains.
Editors Note: Notice how the argument is twisted around at the end of the report. The word "Bogeyman" is used. This is a common allusion to a mythical creature. What is mythical about replacement immigration into Europe? ...
Facebook completes first drone flight above UK, Mark Zuckerberg confirms 2015-03-28 3:15
Solar powered drones which provide internet access to rural and remote areas have been trialled in UK for first time by Facebook.
They â€śhave a wingspan greater than a Boeing 737 but will weigh less than a carâ€ť, according to the social network's chief Mark Zuckerberg.
The drones, developed by Somerset-based company Ascenta which Facebook bought last March, will beam down laser-guided ...