All posts by Tom Marcinko

The common cold: The immune system overreacts

Infect a small study group with rhinovirus-16, the source of the common cold. Scrape cells from inside their noses; repeat for a control group that got a sham inoculation. Then use gene-chip technology to see how more than 6,000 of the symptom sufferers’ genes express themselves.

…[R]hinovirus infection triggered a massive immune response in the nasal mucosa. Because rhinovirus is not as destructive as other more serious viral infections, this response appears to be disproportionate to the threat…. “This study shows that after rhinovirus infection, cold symptoms develop because parts of our immune system are in overdrive,” said Lynn Jump, principal researcher at Procter & Gamble and study author. “The findings are important because they provide us a blueprint for developing the ideal cold treatment: one that maintains the body’s natural antiviral response while normalizing the inflammatory response.”

An antiviral compound called viperin, produced by the epithelial cells, seems to fight the influenza virus, too.

[Rhinovirus: actual microscopic image! by hey mr glen]

Undecided voters: Yeah, right

Undecided voters have probably made up their minds. They just don’t know it yet. U. Virginia psychologist Brian Nosek and colleagues got 25,000 people to take an online test (you can try it yourself). The test mixes up pictures of Obama and McCain with “good” words like “friend” and “bad” words like “enemy,” and asks you to press a key through several cycles of screens.

On average more undecided voters reported explicitly feeling slightly warmer toward Obama than McCain, but Nosek’s implicit measurements showed the undecided subjects had a slight preference for McCain over Obama.

Color me skeptical: I scored a slight preference for the candidate I already didn’t mail in my ballot for.

[Image: gapersblock]

Bookstore chains: What you can and can’t read

A disturbing number of writers are apparently being effectively blacklisted by bookstore chains, even though some of these writers’ books sell pretty well. Gregory Frost witnessed this first-hand when good sales and repeat printings for his novel Shadowbridge weren’t enough to induce a U.S. chain to stock the sequel, Lord Tophet (actually the second half of what should have been one long single volume, but that’s another story). Greg rises above the level of rant to explore why this might be so:

The publisher is required by its owner to turn out bestsellers with assembly line regularity. The dying megastores need the extra income at the same time that they have begun to winnow other titles by those already handicapped authors. In the frenzy of rewards and discounts and product placement, the entire industry has completely lost sight of what it once was in business to provide: Good books. We the readers are the ultimate losers in this rigged game.

My solution is no different than all the writers who’ve shouted from the battlements before me: Buy your books from independent bookstores; the ones that have survived the onslaught, the ones that we hope will arise to fill the gap.

Writers pre-published and otherwise, of course, have an even better motive to support indies. The chains are not our friends. They limit your choices — and your purchases pour money into a dying business model anyway. Whatever chains may be today, they are not the future.

[In my next life, I’d like to be a cat in a bookstore by Glynnis Ritchie]

Fingerprinting mercury emissions from coal

About 2000 tons of mercury from human-generated sources enter the environment every year, but tracing natural versus human sources, and sorting out local pollutants from distant sources, has been been a problem. University of Michigan scientists say they’ve taken a big step towards reading mercury “fingerprints.”

“For some time, we weren’t sure that it was going to be technically possible, but now we’ve cracked that nut and have shown significant differences not only between mercury from coal and, say, metallic forms of mercury that are used in industry, but also between different coal deposits,” [ecologist Joel] Blum said.

How it works:

The fingerprinting technique relies on a natural phenomenon called isotopic fractionation, in which different isotopes (atoms with different numbers of neutrons) of mercury react to form new compounds at slightly different rates. In one type of isotopic fractionation, mass-dependent fractionation, the differing rates depend on the masses of the isotopes. In mass-independent fractionation, the behavior of the isotopes depends not on their absolute masses but on whether their masses are odd or even. Combining mass-dependent and mass-independent isotope signals, the researchers created a powerful fingerprinting tool.

[Image: Christopher Gruver]