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Yale Study Reveals New Family Tree for Ray-Finned Fish

The most common lineages of fish found today in oceans, lakes, and rivers evolved about the same time as mammals and birds, a new Yale University-led study shows.

The comparative genetic analysis of more than 200 fish species, reported the week of Aug. 6 in the Proceedings of the National Academy of Sciences, gave an earlier than expected evolutionary birthday to well-known teleost — or ray-finned — fish such as salmon, bass, or tuna.

The analysis also shows that the very earliest lineages of living teleost fish were eels and bonefishes, not tropical freshwater bonytongue fish as some scientists had proposed. (more…)

Across the Border: Children of U.S.-born Latinas More Likely to Get Retina Cancer, Study Finds

In a large epidemiologic study, researchers at UCLA’s Jonsson Cancer Center found that babies of U.S.-born Latinas are at higher risk for retinoblastoma — a malignant tumor of the retina which typically occurs before the age of 6 — than children of Mexico-born mothers. (more…)

Americans Gaining More Weight than They Say

Despite the increasing awareness of the problem of obesity in the United States, most Americans don’t know whether they are gaining or losing weight, according to new research from the Institute for Health Metrics and Evaluation, also known at IHME, at the University of Washington. (more…)

Predatory Beetles Eavesdrop on Ants’ Chemical Conversations to Find Best Egg-Laying Sites

ANN ARBOR, Mich.— Predatory beetles can detect the unique alarm signal released by ants that are under attack by parasitic flies, and the beetles use those overheard conversations to guide their search for safe egg-laying sites on coffee bushes.

Azteca instabilis ants patrol coffee bushes and emit chemical alarm signals when they’re under attack by phorid flies. In an article published online July 27 in the journal Ecology and Evolution, University of Michigan researchers and their colleagues show that pregnant lady beetles intercept the ants’ alarm pheromones, which let the beetles know that it’s safe to deposit their eggs. (more…)

People with Allergies May Have Lower Risk of Brain Tumors

COLUMBUS, Ohio – New research adds to the growing body of evidence suggesting that there’s a link between allergies and reduced risk of a serious type of cancer that starts in the brain. This study suggests the reduced risk is stronger among women than men, although men with certain allergy profiles also have a lower tumor risk. (more…)

Why Buy a Tablet? Selection of Apps, Price and Device Brand Most Important Factors in Purchase Decision

comScore Introduces TabLens™ to Provide Insight into the U.S. Tablet Market

RESTON, VA, August 6, 2012 – comScore, Inc., a leader in measuring the digital world, today announced the launch of comScore TabLens™, its monthly syndicated service providing insights into U.S. tablet ownership and usage. Based on a 3-month rolling sample of 6,000 U.S. tablet owners, TabLens provides insight into tablet audiences, including demographics, content consumption habits and device ownership, to provide the industry with the most up-to-date look at this expanding tablet market.

“comScore is pleased to announce the availability of TabLens to bring reliable monthly reporting and metrics around tablet devices and their owners,” said Mark Donovan, comScore SVP of Mobile. “TabLens delivers the critical market insights needed by publishers, advertisers, OEMs, and network operators as they attempt to capture value in one of the fastest-growing and most profitable technology markets of all time.” (more…)

Half of the Particulate Pollution in North America Comes from Other Continents

COLLEGE PARK, Md. — Roughly half the aerosols that affect air quality and climate change in North America may be coming from other continents, including Asia, Africa and Europe, according to a new study by researchers at the University of Maryland, College Park, NASA Goddard Space Flight Center, University of Maryland at Baltimore County and the Universities Space Research Association. (more…)

‘Documents that Changed the World’: A podcast series from Joe Janes

The phrase occurred to Joe Janes out of the blue one day and immediately appealed to him. From there, ideas began to flow quickly.

Janes, associate professor in the University of Washington Information School, had been a fan of the British Broadcasting Corp. radio series “A History of the World in 100 Objects” and thought those shows effectively blended history and storytelling.

He got to wondering, what if he took a similar approach to information, telling about the twists and turns of history — through documents? (more…)