Changes in the speed that ice travels in more than 200 outlet glaciers indicates that Greenland’s contribution to rising sea level in the 21st century might be significantly less than the upper limits some scientists thought possible, a new study shows.
“So far, on average we’re seeing about a 30 percent speedup in 10 years,” said Twila Moon, a University of Washington doctoral student in Earth and space sciences and lead author of a paper documenting the observations published May 4 in Science. (more…)
The History Channel and other outlets insist that knowing about the past is not enough: It must come alive and we must feel it. But are our emotions and sentiments a reliable guide to historical understanding? Daniel Block finds that Wordsworth, Keats, and other British Romantic writers may have something new to offer about the use and value of our affective experience.
It is certainly familiar turf for Baby Boomers, this persistent effort to figure out the ’60s or ’70s. Can history be parsed — actual occurrences considered apart from emotion-laden memories? And can a reliable picture of the whole be teased out, something that might be enriching, informative, or useful?
Daniel Block has been studying writers of the British Romantic era — the poets Keats and Wordsworth, the historical novelist Walter Scott and others. It’s a great, rich body of writing that speaks to the formation of historical feeling. (more…)
If you throw a rubber balloon filled with water against a wall, it will spread out and deform on impact, while the same balloon filled with honey, which is more viscous, will deform much less. If the balloon’s elastic rubber was stiffer, an even smaller change in shape would be observed.
By simply analyzing how much a balloon changes shape upon hitting a wall, you can uncover information about its physical properties.
Although cells are not simple sacks of fluid, they also contain viscous and elastic properties related to the membranes that surround them; their internal structural elements, such as organelles; and the packed DNA arrangement in their nuclei. Because variations in these properties can provide information about cells’ state of activity and can be indicative of diseases such as cancer, they are important to measure. (more…)
EAST LANSING, Mich. — Companies that spend millions of dollars sponsoring events need to be careful how and when they spend that money, as often their return on investment is difficult to measure. And occasionally it even benefits their competitors.
In a paper recently published in the Journal of Advertising, a team of researchers led by a Michigan State University faculty member found that the average consumer may not have a clear memory for the current sponsor of an event, especially if this sponsor is taking over from another. (more…)
Intelligence historian cites changing focus of American espionage
In the spy trade, predicting the future is a risky business at best, but experts believe that America’s intelligence efforts will focus on Iran, North Korea and China.
Matthew M. Aid, intelligence historian and expert on the National Security Agency, discussed the forces driving this emerging strategy during a talk on Wednesday, May 2, in Mitchell Hall.
Aid’s talk, “The Future of Intelligence and Espionage,” concluded the spring 2012 Global Agenda speaker series “Spies, Lies and Sneaky Guys: Espionage and Intelligence in the Digital Age.” (more…)
Berkeley Lab-led team explores a way to create biofuels, minus the photosynthesis
Is there a new path to biofuels hiding in a handful of dirt? Lawrence Berkeley National Laboratory (Berkeley Lab) biologist Steve Singer leads a group that wants to find out. They’re exploring whether a common soil bacterium can be engineered to produce liquid transportation fuels much more efficiently than the ways in which advanced biofuels are made today.
The scientists are working with a bacterium called Ralstonia eutropha. It naturally uses hydrogen as an energy source to convert CO2 into various organic compounds. (more…)
Big trees three or more feet in diameter accounted for nearly half the biomass measured at a Yosemite National Park site, yet represented only 1 percent of the trees growing there.
This means just a few towering white fir, sugar pine and incense cedars per acre at the Yosemite site are disproportionately responsible for photosynthesis, converting carbon dioxide into plant tissue and sequestering that carbon in the forest, sometimes for centuries, according to James Lutz, a University of Washington research scientist in environmental and forest sciences. He’s lead author of a paper on the largest quantitative study yet of the importance of big trees in temperate forests being published online May 2 on PLoS ONE. (more…)
GAINESVILLE, Fla. — University of Florida lepidopterist Andrei Sourakov has spent his life’s work studying moths and butterflies. But it was his teenage daughter, Alexandra, who led research on how color impacts butterflies’ feeding patterns.
The research shows different species exhibit unique foraging behaviors, and the study may be used to build more effective, species-specific synthetic lures for understanding pollinators, insects on which humans depend for sustaining many crops.
