Cure For Honey Bee Colony Collapse?

Beekeeper with honeycomb. (Credit: iStockphoto/Kamilla Mathisen)

From Science Daily:

ScienceDaily (Apr. 14, 2009) — For the first time, scientists have isolated the parasite Nosema ceranae (Microsporidia) from professional apiaries suffering from honey bee colony depopulation syndrome. They then went on to treat the infection with complete success.

In a study published in the new journal from the Society for Applied Microbiology: Environmental Microbiology Reports, scientists from Spain analysed two apiaries and found evidence of honey bee colony depopulation syndrome (also known as colony collapse disorder in the USA). They found no evidence of any other cause of the disease (such as the Varroa destructor, IAPV or pesticides), other than infection with Nosema ceranae. The researchers then treated the infected surviving under-populated colonies with the antibiotic drug, flumagillin and demonstrated complete recovery of all infected colonies.

Read more ....

Three Subgroups of Neanderthals Identified

A Neanderthal Family. Credit: NASA/JPL-Caltech

From Live Science:

We tend to think of Neanderthals as one species of cavemen-like creatures, but now scientists say there were actually at least three different subgroups of Neanderthals.

Using computer simulations to analyze DNA sequence fragments from 12 Neanderthal fossils, researchers found that the species can be separated into three, or maybe four, distinct genetic groups.

Read more ....

Egypt Discovers Dozens Of Well-Preserved Mummies In 4,000-Year-Old Necropolis In Fayoum

Ancient beauty: A wooden coffin containing a linen-wrapped mummy covered in cartonnage found by the Egyptian archaeological mission

From The Daily Mail:

Egyptian archaeologists have discovered an ancient necropolis containing dozens of beautifully preserved mummies dating back as far as 4,000 years.

Excavations sponsored by Egypt's Supreme Council of Antiquities revealed 53 tombs cut into rock south east of the Illahun pyramids in the oasis of Fayoum.

Antiquities chief Zahi Hawass described four of the mummies, dating to the 22nd Dynasty (931-725 BC), as among the most beautiful ever discovered.

Read more ....

Da Vinci Portrait Found In Cathedral Window

This stained-glass scene by the French artist Guillaume de Pierre di Marcillat (above) depicts an aging Leonardo da Vinci, argues Italian scholar Alezzandro Vezzosi. When compared with a scene from Leonardo's masterpiece "The Last Supper" (below), "the figure next to the old bearded man" in the stained-glass work "strongly recalls the profile of the apostle Matthew in Leonardo's masterpiece," said Vezzosi.

From Discovery:

A new, vividly colored portrait of Leonardo da Vinci has emerged from the windows of Arezzo's Cathedral in Tuscany, Italy, claims an Italian scholar who has published the finding in a new book, "The Portraits of Leonardo."

Depicting an amiable, bearded old man wearing a red hat, the portrait is one of many figures appearing in the stained glass on the cathedral's right wall.

The scene, which shows the biblical story known as the Raising of Lazarus, is part of a renowned portfolio of stained-glass work by the undisputed master of the time, the French artist Guillaume de Pierre di Marcillat (1475-1529).

Read more ....

Just Say No To Aging?

From Newsweek:

A provocative new book from a Harvard psychologist suggests that changing how we think about our age and health can have dramatic physical benefits.

Imagine that you could rewind the clock 20 years. It's 1989. Madonna is topping the pop charts, and TV sets are tuned to "Cheers" and "Murphy Brown." Widespread Internet use is just a pipe dream, and Sugar Ray Leonard and Joe Montana are on recent covers of Sports Illustrated.

Read more ....

Hand Of God: Scientists Reveal Amazing X-ray Image Of A Supernova In Deep Space

The Hand of God: A small, dense object only 12 miles in diameter is responsible for this beautiful X-ray nebula that spans 150 light years

From The Daily Mail:

We've already seen pictures of his eye... now we have the first image of the hand of God.

The ghostly blue cloud seems to form an outstretched thumb and fingers grasping a burning lump of coal.

This astonishing image was taken by Nasa's Chandra X-ray observatory, which is orbiting 360 miles above the Earth's surface.

It recalls those of the Helix planetary nebula, whose blue centre surrounded by white clouds earned it the nickname 'the eye of God'.

The hand was created when a star exploded in a supernova, creating a rapidly-spinning 12-mile-wide star called a pulsar, which is deep inside the white blob at the hand's wrist.

Read more ....

Stomach Bug Crystallizes A Threat From Antibiotics

Stuart Bradfor

From New York Times:

Earlier this year, Harold and Freda Mitchell of Como, Miss., both came down with a serious stomach bug. At first, doctors did not know what was wrong, but the gastrointestinal symptoms became so severe that Mrs. Mitchell, 66, was hospitalized for two weeks. Her husband, a manufacturing supervisor, missed 20 days of work.

A local doctor who had worked in a Veterans Affairs hospital recognized the signs of Clostridium difficile, a contagious and potentially deadly bacterium. Although the illness is difficult to track, health officials estimate that in the United States the bacteria cause 350,000 infections each year in hospitals alone, with tens of thousands more occurring in nursing homes. While the majority of cases are found in health care settings, 20 percent or more may occur in the community. The illness kills an estimated 15,000 to 20,000 people annually.

Read more ....

Driller Thriller: Antarctica's Tumultuous Past Revealed

From The New Scientist:

THE midnight sun hangs low in the sky on this November evening. A plain of flat ice sweeps in all directions and mountains rise in the distance. Perched on the sea ice is a massive, teepee-shaped tent. A mechanised rumble emanates from within.

Inside the tent, men in hard hats tend a rotating shaft of steel. This drill turns day and night through 8 metres of sea ice covering the surface of McMurdo Sound, off the coast of Antarctica, and through 400 metres of water beneath it and into the seabed.

Read more ....

Hemp Could Be Key To Zero-carbon Houses

The Renewable House is a timber frame house with hemp-lime walls. (Credit: Image from the National Non-Food Crops Centre)

From Science Daily:

ScienceDaily (Apr. 13, 2009) — Hemp, a plant from the cannabis family, could be used to build carbon-neutral homes of the future to help combat climate change and boost the rural economy, say researchers at the University of Bath.

A consortium, led by the BRE Centre for Innovative Construction Materials based at the University, has embarked on a unique housing project to develop the use of hemp-lime construction materials in the UK.

Read more ....

Got Nature? Why You Need to Get Out

A little time spent in a green space can improve psychological and physical health, researchers are finding. Credit: stock.xchng

From Live Science:

NEW YORK — In our increasingly urbanized world, it turns out that a little green can go a long way toward improving our health, not just that of the planet.

That could mean something as simple as a walk in the park or just a tree viewed through a window. It's not necessarily the exercise that is the key. It's the refreshing contact with nature and its uncomplicated demands on us.

Read more ....

Next-Gen Atom Smashers: Smaller, Cheaper and Super Powerful

From Wired News:

Size matters in particle physics: The bigger the machine, the more violently physicists can smash atoms together and break open the deepest mysteries of the subatomic world. But a revolutionary new technology could eventually render some gargantuan particle accelerators passé.

Using simulations, a team of German and Russian physicists have pioneered a new technique for particle acceleration, called proton-driven plasma-wakefield acceleration (PWFA). The technique may one day allow machines a fraction of the size of today's accelerators to create the highest-energy particles ever.

Read more ....

World's Highest-Energy Laser To Create Mini-Stars (Pictures)

To produce the temperatures and pressures needed for fusion, the facility will aim all of its 192 laser beams simultaneously on a hydrogen target. This all happens inside this 10-metre-diameter chamber, which weighs 130 tonnes. The sphere is made up of 18 aluminium sections that are each 10 centimetres thick.The square openings are for the lasers, and the round openings are used to accommodate nearly 100 pieces of diagnostic equipment. (Image: Lawrence Livermore National Security, LLC/Lawrence Livermore National Laboratory/Department of Energy)

From New Scientist:

In early April, the $3.5 billion National Ignition Facility in Livermore, California, was given the green light to begin a series of experiments. Researchers hope they will culminate in the first ever self-sustained, stable fusion reaction that will release many times more energy than the energy used to trigger the reaction. The stadium-sized facility will train 192 laser beams on tiny targets, producing pressures and temperatures that could illuminate the interiors of giant planets and pave the way to the first fusion reactors.

Read more ....

Climate Change 'Own Goal': Laws To Combat Acid Rain Are DRIVING Arctic Warming, Claims Nasa

From The Daily Mail:

It is widely recognised that humans are their own worst enemies when it comes to global warming.

But the latest research from Nasa suggests laws created to preserve the environment are causing much of the damage.

Legislation to improve air quality and cut acid rain has accounted for a shocking half of Arctic warming over the past three decades, the space agency reports.

Climate scientist Drew Shindell of the NASA Goddard Institute for Space Studies in New York found that declines in solid 'aerosol' particles brought in under laws to improve air quality likely triggered 45 per cent of temperature rises.

Read more ....

Dance Your Way To Successful Aging

New research shows that older people can dance their way towards improved health and happiness. (Credit: iStockphoto/Georgy Markov)

From Science Daily:

ScienceDaily (Apr. 10, 2009) — Older people can dance their way towards improved health and happiness, according to a report from the Changing Ageing Partnership (CAP).

The research, by Dr Jonathan Skinner from Queen’s University Belfast, reveals the social, mental and physical benefits of social dancing for older people. It suggests that dancing staves of illness, and even counteracts decline in ageing.

Recommendations include the expansion of social dance provision for older people in order to aid successful ageing and help older people enjoy longer and healthier lives.

Read more ....

The Search For The Solar System's Lost Planet

Artist's conception of the hypothetical impact of Theia and young Earth. Credit: NASA/GSFC

From Live Science:

The solar system might once have had another planet named Theia, which may have helped create our own planet's moon.

Now two spacecrafts are heading out to search for leftovers from this rumored sibling, which would have been destroyed when the solar system was still young.

"It's a hypothetical world. We've never actually seen it, but some researchers believe it existed 4.5 billion years ago — and that it collided with Earth to form the moon," said Mike Kaiser, a NASA scientist at the Goddard Space Flight Center in Maryland.

Read more ....

One Speck Of Blood Or Tissue May Be Enough To Diagnose Cancer

From Times Online:

A drop of blood or speck of tissue no bigger than a full stop could soon be all that is required to diagnose cancers and assess their response to treatment, research suggests.

New technology that allows cancer proteins to be analysed in tiny samples could spell the end of surgical biopsies, which involve removing lumps of tissue, often under general anaesthetic.

Researchers at Stanford University, California, have developed a machine that separates cancer-associated proteins by means of their electric charge, which varies according to modifications on the protein’s surface.

Read more ....

Finding Pages From Browser History

From Technology Review:

A new tool aims to make a Web browser's history more useful.

Web browsers remember the sites that they have visited in the past, but few people seem to use this information. Jing Jin, a graduate student at Carnegie Mellon University, has developed a new browser-history tool, which she and her colleagues developed after studying how people use their browser history. They demonstrated the prototype in a presentation this week at the Computer-Human Interaction (CHI 2009) Conference, in Boston.

Read more ....

Brown Fat: A Fat That Helps You Lose Weight?

From Time Magazine:

For most people, fat is a burden. It doesn't really matter whether it appears as cellulite on our thighs or cholesterol in our veins — we just don't want it.

But it turns out that our bodies also make a unique form of fat tissue that behaves remarkably unlike any other: rather than storing excess energy, this fat actually burns through it.

It's called brown fat (as opposed to the more familiar white fat that hangs over belt buckles and swings from the backs of arms), and a series of papers published in the New England Journal of Medicine confirm for the first time that healthy adults have stores of this adipose tissue, which researchers hope to study further as a potential new weight-loss treatment.

Read more ....

Google CEO Sees Future For News In Advertising

From The Globe And Mail:

SAN DIEGO — Google's CEO Eric Schmidt recommends that news organizations continue to rely on advertising but seek new ways to reach readers.

Without providing specific recipes, Mr. Schmidt's speech Tuesday lays out a few possibilities.

One is a site for medicine similar to the online encyclopedia Wikipedia, which lets users collectively contribute and edit entries.

He says there's still room for subscription and pay-by-the-piece journalism but he emphasizes advertising, the source of 98 per cent of Google Inc.'s revenue.

Read more ....

Oldest Stone Blades Uncovered

Cutting-edge technology. A stone core (lower left) and three of the recently found blades. Credit: Cara Roure Johnson and Sally McBrearty/University of Connecticut

Science Now:

CHICAGO, ILLINOIS--Paleoanthropologists working in Africa have discovered stone blades more than a half-million years old. That pushes the date of the earliest known blades back a remarkable 150,000 years and raises a question: What human ancestor made them?

Not long ago, researchers thought that blades were so hard to make that they had to be the handiwork of modern humans, who had evolved the mental wherewithal to systematically strike a cobble in the right way to produce blades and not just crude stone flakes. First, they were thought to be a hallmark of the late Stone Age, which began 40,000 years ago. Later, blades were thought to have emerged in the Middle Stone Age, which began about 200,000 years ago when modern humans arose in Africa and invented a new industry of more sophisticated stone tools. But this view has been challenged in recent years as researchers discovered blades that dated to 380,000 years in the Middle East and to almost 300,000 years ago in Europe, where Neandertals may have made them (ScienceNOW, 1 December 2008).

Read more ....