Science & Technology
Map


Info

Sea anemones are half-plant, half-animal, gene study finds

Sea Anemone
© Copyright Nature, 2005
The sea anemone is a genetic oddball, with some traits similar to plants and others more closely resembling higher animals.
The sea anemone is an oddball: half-plant and half-animal, at least when it comes to its genetic code, new research suggests.

The sea creature's genes look more like those of animals, but the regulatory code that determines whether those genes are expressed resembles that in plants, according to a study published Tuesday (March 18) in the journal Genome Research.

What's more, the complicated network of gene interactions found in the simple sea anemone resembles that found in widely divergent, more complex animals.

"Since the sea anemone shows a complex landscape of gene regulatory elements similar to the fruit fly or other model animals, we believe that this principle of complex gene regulation was already present in the common ancestor of human, fly and sea anemone some 600 million years ago," Michaela Schwaiger, a researcher at the University of Vienna, said in a statement.
Cell Phone

Sick? There will soon be an app for that

bacteria detection
© unknown
Left: Pathogens and silver particles, blocking holes to detect the presence of bacteria. Right: A close-up of blocked holes
Research conducted by scientists at the University of Houston brings your phone one step closer to telling you when you're sick. Jiming Bao, an assistant professor of electrical and computer engineering, and Richard Willson, a professor of chemical and biomolecular engineering, together developed a gold-lined glass slide with holes that will be blocked in the presence of bacteria. The concept is still being developed, but Willson claims a final product that attaches to your phone could cost only $20.

That price is bold, especially for a technique so involved beneath the surface. The process centers around a glass slide covered in light-sensitive material, and evaporated gold with tiny holes that allow light to pass through them. Disease antibodies are placed into the holes of the slide, sticking to the glass. If a biological sample contains that disease, those molecules will bond with the antibodies in the holes. This isn't enough to completely cover the holes, so another layer of antibodies is placed on top, along with enzymes that evoke silver production. After a short period of time, the slide can be rinsed again and the silver produced will be enough to block light from coming through the holes.

Comment: Are we so dense that we need a phone to tell us when we're sick?

Alarm Clock

Scientists find mechanism to reset body clock

Body Clock
© Huffingtonpost
Researchers from The University of Manchester have discovered a new mechanism that governs how body clocks react to changes in the environment. And the discovery, which is being published in Current Biology, could provide a solution for alleviating the detrimental effects of chronic shift work and jet-lag.

The team's findings reveal that the enzyme casein kinase 1epsilon (CK1epsilon) controls how easily the body's clockwork can be adjusted or reset by environmental cues such as light and temperature.

Internal biological timers (circadian clocks) are found in almost every species on the planet. In mammals including humans, circadian clocks are found in most cells and tissues of the body, and orchestrate daily rhythms in our physiology, including our sleep/wake patterns and metabolism.

Dr David Bechtold, who led The University of Manchester's research team, said: "At the heart of these clocks are a complex set of molecules whose interaction provides robust and precise 24 hour timing. Importantly, our clocks are kept in synchrony with the environment by being responsive to light and dark information."

This work, funded by the Biotechnology and Biological Sciences Research Council, was undertaken by a team from The University of Manchester in collaboration with scientists from Pfizer led by Dr Travis Wager.
Arrow Up

Risk of a monster quake and tsunami off California's North Coast is greater than researchers once thought

© Matthew Crawford/For The Times
A man rides his bicycle in 2004 in Crescent City, where a 1964 earthquake spawned a deadly tsunami.
If a 9.0 earthquake were to strike along California's sparsely populated North Coast, it would have a catastrophic ripple effect.

A giant tsunami created by the quake would wash away coastal towns, destroy U.S. 101 and cause $70 billion in damage over a large swath of the Pacific coast. More than 100 bridges would be lost, power lines toppled and coastal towns isolated. Residents would have as few as 15 minutes notice to flee to higher ground, and as many as 10,000 would perish.

Scientists last year published this grim scenario for a massive rupture along the Cascadia fault system, which runs 700 miles off shore from Northern California to Vancouver Island.

The Cascadia subduction zone is less known than the San Andreas fault, which scientists have long predicted will produce The Big One. But in recent years, scientists have come to believe that the Cascadia is far more dangerous than originally believed and have been giving the system more attention.

The Cascadia begins at a geologically treacherous area where three tectonic plates are pushing against each other. The intersection has produced the two largest earthquakes in California in the last decade - Sunday's 6.8 temblor off Eureka and a 7.2 quake off Crescent City in 2005. The area has produced six quakes of magnitude 7.0 or greater in the last 100 years, the California Geological Survey said.
Telescope

Asteroid 163 Erigone to blot out Leo star Regulus March 20

© Bob King with help from photos by the ESO/NASA
Illustration showing asteroid 163 Erigone about to cover Leo’s brightest star Regulus around 2:07 Eastern Daylight Time Thursday morning March 20, 2014. As the asteroid’s shadow passes over the ground, observers will see Regulus disappear for up to 14 seconds.
How does a tiny asteroid make one of the brightest stars in the sky disappear? By passing directly in front of it. Upwards of 20 million people will have the opportunity to watch asteroid 163 Erigone occult the bright star Regulus for up to 14 seconds next Thursday morning March 20. Billed as the best and brightest occultation ever predicted for North America, the sight of Regulus vanishing in plain sight should be a jaw-dropper.

Only thing is, you just have to be in the right place to see it. Check the map. If you live within the band, which cuts a swath some 45 miles (73 km) wide from northern Ontario to New Jersey, you're in! While the northern reaches of the occultation occur over sparely populated tundra, the southern half encompasses all of New York City plus a few nibbles of New Jersey and Connecticut. All the rest of us will have to travel to the centerline much as we would to see a total eclipse of the sun.
Question

New gully appears on Mars: Water can't have formed it, so what did?

Gully on Mars
© NASA/JPL-Caltech/Univ. of Arizona
At right, a new gully appears in pictures of the same region of Terra Sirenum on Mars. The picture at left was taken in November 2010, and the right in May 2013. Pictures obtained from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA’s Mars Reconnaissance Orbiter.
Check out the groove! In the blink of a geological lifetime, a new gully has appeared on the planet Mars. These images from NASA's Mars Reconnaissance Orbiter show a new channel in the southern hemisphere region of Terra Siernum that appeared between November 2010 and May 2013.

While there's a lot of chatter about water on Mars, this particular feature is likely not due to that liquid, the agency added.

"Gully or ravine landforms are common on Mars, particularly in the southern highlands. This pair of images shows that material flowing down from an alcove at the head of a gully broke out of an older route and eroded a new channel," NASA stated.
Bizarro Earth

NASA-funded scientists show that society is doomed because catastrophic socio-economic collapse is inevitable

There's never been a shortage of doomsday scenarios. From the dreaded Mayan Apocalypse of 2012 (remember that?) to the havoc wreaked in the movie The Day After Tomorrow, people have been predicting the end of civilization for as long as there has been a civilization.

The trouble is, they're sometimes correct: The Roman Empire fell spectacularly, as did the Mayan civilization, the Han Dynasty of China, India's Gupta Empire and dozens of other once-mighty kingdoms.

But how, exactly, do powerful empires collapse, and why? Researchers now believe they've found an answer, one that has troubling implications for today - because we're clearly on the road to ruin.

Comment: In other words, collapse can be mitigated or avoided through an 11th-hour transition - via peaceful, humanist, secular, and socialist revolution - firstly in America, then spread throughout its empire - to a just, sustainable and egalitarian global society.

That's not going to happen.

So total and catastrophic collapse is inevitable.

Books

Boeing Model 777 Airplanes: Protection from Unauthorized Internal Access

© Globalnews.ca
Special Conditions: Boeing Model 777-200, -300, and -300ER Series Airplanes; Aircraft Electronic System Security Protection From Unauthorized Internal Access

A Rule by the Federal Aviation Administration on 11/18/2013

Action

Final Special Conditions.

Summary

These special conditions are issued for the Boeing Model 777-200, -300, and -300ER series airplanes. These airplanes, as modified by the Boeing Company, will have novel or unusual design features associated with the architecture and connectivity of the passenger service computer network systems to the airplane critical systems and data networks. This onboard network system will be composed of a network file server, a network extension device, and additional interfaces configured by customer option. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.
Bomb

Big Bang - The greatest fairy tale ever told

Big Bang
© Tallbloke Talkshop
There is freedom of choosing religion in our country so there is no problem what you or I believe. On the other hand there is a problem when scientists mix facts supported by evidence and laws of nature with fantasy, unfounded hypotheses and faith.

There is no qualitative difference being a creationist believing that earth and our galaxy was created 6000 years ago or believing that the universe was created from a small cosmic egg 14 billion years ago. From where did this egg originate and what existed before that?

There must have been something more (or rather, less) than a nuclear bomb within it since at that point not even matter are believed to has existed. None of these beliefs are or can be supported by scientific methods or verified experience. Hence, it cannot be classified as science.

Many years ago a saw a "scientific" 600 page book in a book store. It claimed to tell what happened in the first MINUTE after Big Bang. It was loaded with formulae and unverified hypotheses. To me this book represented a peak of human hubris, a pretention that logic and mathematical models without any verified anchoring in reality could give the answer to the eternal mystery of our existence. Evidently the author was religious or crazy.
Airplane

Legislation abolishing roaming charges goes through European parliament

Roaming charges for using a mobile phone abroad will be abolished from December 2015 in proposals expected to be voted through the European parliament on Tuesday, but operators have warned that bills could rise domestically to pay for the change.

Posting holiday snaps to Instagram or keeping up with emails while abroad should no longer result in unexpectedly high bills under legislation to be approved by members of the European parliament's industry committee on Tuesday, which is due to be rubber stamped by the full parliament on 3 April.
Top