We've all seen them, those great B-films where a giant, vicious monster from under the sea, or invaders from outer space arrive to cause mayhem across our cities and generally mess up our way of life. In the end, it seems no matter who or what it was that was attacking us, be it Mothra, Godzilla, or some race of belligerent extra-terrestrials, we could always count on the military to save our collective behind.
Unfortunately, with mosquitoes, that might now be the case anymore.
Scientists are reporting that Deet, one of the most widely used active ingredients in insect repellents, loses its effectiveness against mosquitoes shortly after those ubiquitous, blood-seeking winged vermin are first exposed to it.
Deet - the common name for N,N-diethyl-meta-toluamide - was developed by the US Army after the Second World War to help combat insects during jungle warfare. It was used extensively in the Korean and Vietnam wars, but mosquitoes seem to be able to adapt quickly to it.
"Mosquitoes are very good at evolving very very quickly", said Dr. James Logan of the London School of Hygiene and Tropical Medicine and co-author of the study. "There is something about being exposed to the chemical that first time that changes their olfactory system - changes their sense of smell - and their ability to smell Deet, which makes it less effective."
So what I want to know is where does that leave us here in Minnesota where the mosquito constantly competes with the Common Loon for the title of State Bird? Maybe it's time to start digging the bunker in the backyard.
Courtesy MstroeckAh, the potential uses of carbon nanotubes. You could make bullet-stopping combat jackets, stronger cement, stronger and lighter sports equipment, a space elevator, or.......a cupid. A student from Brigham Young University made a teeny cupid using carbon nanotubes. Though this cupid may not impact society the way a space elevator would, it's still pretty amazing how researchers are able to create things using such tiny building blocks.
Here's a long, but very inspirational, report on a 14-year-old Michigan girl who is rebuilding a Pontiac Fiero car all on her own. Her goal, to drive it on her 16th birthday.
This amazing video from NASA (via EarthSky) shows an incredibly gigantic eruption on the Sun's surface that produced three different types of events: a solar flare, a coronal mass ejection (CME), and a really interesting and rare phenomenon known as coronal rain.
Coronal rain occurs when hot plasma in the eruption cools and condenses then follows the outline of the normally invisible magnetic fields as it rains back to the Sun's chromosphere. I found that particularly amazing to see.
The images were gathered on July 19, 2012 by the Solar Dynamics Observatory’s AIA instrument. One frame was shot every 12 seconds over a span of 21.5 hours from 12:30 a.m. EDT to 10:00 p.m. EDT. The video plays at a rate of 30 frames per second, so each second equals 6 minutes of real time.
What's extra cool is when the scale of this thing is compared to the size of Earth. If you were feeling small earlier today, you should be feeling microscopic after watching this.
Last week's meteor in Russia is being compared to the Tunguska event that took place in Siberia over a century ago. We posted about it previously, so if you're wondering what that was exactly, you can learn all about it here:
No, you're not seeing double in this post. Last week a Houston woman gave birth to two pairs of identical twins. For those of you charting it out at home, that would be a set of maternal twins that both divided into sets of fraternal twins right after conception. The four boys were named Ace, Blaine, Cash and Dylan. See any pattern there?
Courtesy NASA/JPLLast week could have been called "Chicken Little Week" with the near miss of Earth by an asteroid and and the dazzling, but havoc-producing meteor crossing through the Russian skies. Have you taken off your safety helmet yet?
While it takes an extraordinary week like that to make most of us think about the dangers looming out in space, there are researchers dedicated to tracking the dangerous projectiles in space. Here's a great report on public and private research groups keeping track of the random traffic in the skies.
Interestingly, they claim that we only really spot about 10 percent of the miscellaneous space stuff that could collide with Earth. And, they're not just settling for trying to pinpoint where the problems are. They're trying to figure out ways to deflect or break-up potentially damaging space threats. Taking it one step higher, some are even investigating ways to mine key minerals from these threats to Earth.
The Minnesota DNR is monitoring an eagles' nest in the Twin Cities area and the eggs should be hatching any day now. Stay tuned and watch it happen!
Courtesy Materials Research Society Science-as-Art Competition and Vilas Pol, Michael Tackeray, Dean Miller and Michele Nelson, Argonne National LaboratoryEvery year, scientists attending the Materials Research Society conference can enter in the Science as Art competition. The images they submit are created by manipulating teeny-tiny particles. There's a great video about this competition as well.
I think the prize for the winners is 5 minutes away from the scanning electron micrograph.