898,409 articles

Beta-catenin molecule is required for tooth root formation

The tooth root, together with the surrounding periodontium, maintains the tooth in the jaw. The root develops after the crown forms, a process called morphogenesis. While the molecular and cellular mechanisms of early tooth development and crown morphogenesis have been extensively studied, little is known about the molecular mechanisms controlling tooth root...

Blocking digestive enzymes may reverse shock, stop multiorgan failure

New research moves researchers closer to understanding and developing treatments for shock, sepsis and multiorgan failure. Collectively, these maladies represent a major unmet medical need: they are the number one cause of mortality in intensive care units in the United States, with hundreds of thousands of deaths annually. The new research provides novel results linking digestive enzymes to...

Household chores: Gender equality's final frontier

Working-class couples that buck convention and live together rather than marry take on traditional roles when it comes to housework, according to a new study by a Cornell University sociologist. Cohabiting women do a disproportionate share of the housework, even when the women work and the men don't – and even when the women want to share the housework more...

Space instrument adds big piece to solar corona puzzle

How can the solar atmosphere get hotter, rather than colder, the farther you go from the sun's surface? This mystery has puzzled solar astronomers for decades. A suborbital rocket mission that launched in July 2012 has just provided a major piece of the puzzle.

Synesthesia traced to colors of kids magnetic letters: Learning and memory may play central role

People with color-grapheme synesthesia experience color when viewing written letters or numerals, usually with a particular color evoked by each grapheme (i.e., the letter 'A' evokes the color red). In a new study, researchers present data from 11 color grapheme synesthetes who had startlingly similar color-letter pairings that were traceable to childhood toys containing magnetic colored...

Personal epigenetic 'signatures' found consistent in prostate cancer patients' metastases

In a genome-wide analysis of 13 metastatic prostate cancers, scientists at the Johns Hopkins Kimmel Cancer Center found consistent epigenetic “signatures” across all metastatic tumors in each patient. The discovery of the stable, epigenetic “marks” that sit on the nuclear DNA of cancer cells and alter gene expression, defies a prevailing belief that the marks vary so much within each...

Readying for Big Launch, RIM Releases Enterprise Service 10

In a major step toward its launch of the new BlackBerry 10 platform next week, Research In Motion made available on Wednesday its new Enterprise Service 10 for download. The Waterloo, Ontario-based company said the new release "reinvents" its Enterprise Mobility Management by combining device management, security and mobile applications management. Peter Devenyi, senior vice president of...

What New Ideas Does Google Have Brewing At Motorola?

My Android phone just went splat. Google’s CEO says its Motorola division is working on that.I was texting last weekend while stopped at a red light on my bicycle, and as the light turned green, I carelessly put the phone in my pocket and pedaled off.  Next thing I knew, my Android phone, a year-old Samsung Galaxy Nexus, had hit the pavement. The phone functions, but now the screen is webbed...

App Lets Stolen Smartphones Snap Thieves In the Act

Lookout’s Lock Cam will take and send you a photo of the person (or pet) who stole your gadget.Mobile security software maker Lookout announced a smart-sounding new feature for its Android app today that might help you recover a stolen smartphone or tablet: Once someone tries and fails three times to unlock your password-protected gadget, Lookout Mobile Security will stealthily take and e-mail...

Google Hints at Plans for an Advanced Motorola X Phone

Many have been waiting and watching for Google to get more specific about its Motorola agenda, particularly after it entered a deal to sell the Motorola Home business to Arris Group for $2.35 billion late last year. As part of its quarterly earnings report on Tuesday, Google hinted at its plans for Motorola. Google posted $14.2 billion in earnings in the fourth quarter of 2012. Motorola, which...

A Free Database of the Entire Web May Spawn the Next Google

Common Crawl supplies a database of over five billion Web pages in the hope that it will inspire new research or online services.Google famously started out as little more than a more efficient algorithm for ranking Web pages. But the company also built its success on crawling the Web—using software that visits every page in order to build up a vast index of online content.

Health and environment: A closer look at plastics

Scientists have been following the chemical trail of plastics, quantifying their impact on human health and the environment. In a new overview, researchers detail the risks and societal rewards of plastics and describe strategies to mitigate their negative impacts, through reconsideration of plastic composition, use and...

Retrovirus in the human genome is active in pluripotent stem cells

A retrovirus called HERV-H, which inserted itself into the human genome millions of years ago, may play an important role in pluripotent stem cells. The discovery, which may help explain how these cells maintain a state of pluripotency and are able to differentiate into many types of cells, could have profound implications for therapies that would use pluripotent stem cells to treat a range of...

Scientists underestimated potential for Tohoku earthquake: Now what?

The massive Tohoku, Japan, earthquake in 2011 and Sumatra-Andaman superquake in 2004 stunned scientists because neither region was thought to be capable of producing a megathrust earthquake with a magnitude exceeding 8.4. Now earthquake scientists are going back to the proverbial drawing board and admitting that existing predictive models looking at maximum earthquake size are no longer...