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...

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...

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...

Through the use of hyperbaric, oxygen-rich chambers, medical researchers have found a way to restore a significant amount of neurological function in brain tissue thought to be chronically damaged by stroke, traumatic injury, and metabolic disorder -- even years after the original...

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.

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...

Melting Arctic sea ice is no longer just evidence of a rapidly warming planet —- it’s also part of the problem.

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...

When Facebook introduced its new Graph Search feature at a much-hyped event in California last week, tech observers predicted that the results would reach into Facebook users' information in unexpected ways and be, well, just creepy. A new Tumblr blog called Actual Facebook Graph Searches is proving that prediction true....

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...

Vultures are more valuable than you may think, or at least they...

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...

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...

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 truck carrying caramelized goat cheese caught fire and raged for days. ->

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.

Put your smartphone into this bowl's slot and never eat alone again. ->

Though the sun appears yellow to the naked eye, it actually emits light in all colors, which scientists can see using specialized telescopes designed to observe wavelengths beyond the visible...

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...

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...

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...