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Your Eyes Have Automatic Light Meters
October 1, 2004
Every pupil knows that pupils constrict in bright light and dilate in dim light, but how? Physiologists had assumed the retina signalled the iris muscles, but now it appears there is an independent mechanism in the iris itself, at least in birds, and probably in mammals, too. A report in EurekAlert summarizes a finding from […]
Neandertal Promoted to Fully Human
October 1, 2004
The myth of the brutish, subhuman Neandertal is apparently almost dead. Science1 Oct. 1 showed a picture of him in a business suit in an article entitled, “Dressed for Success: Neandertal Culture Wins Respect.” Michael Balter writes, “respect is growing for Neandertals” as evidence mounts that they made jewelry, wore clothing, and survived a variety […]
Cosmologist Squirms at Thought of Fine-Tuning
September 30, 2004
Lawrence Krauss (Case Western Reserve U, Ohio) meant to talk about prospects for distinguishing between sources of so-called dark energy, the mysterious force that appears to be accelerating the expansion of the universe. But in the process, he opened his soul and revealed feelings, dreams, and nightmares. First, he states the problem: Dark energy is […]
PBS Airs Another Evolution Series: Origins
September 29, 2004
PBS NOVA aired its latest installment on evolution, a 4-hour miniseries entitled Origins, on September 28 and 29. The website hype describes it as follows: Has the universe always existed? How did it become a place that could harbor life? What was the birth of our planet like? Are we alone, or are there alien […]
Date of Biblical Artifact Corroborated
September 29, 2004
In 1979, a silver scroll was discovered near Jerusalem that contained the text of the priestly benediction known from the Pentateuch (Numbers 6:24-26). The scroll was dated at the 7th century BC at the time, but doubts remained, some thinking that instead it was from post-exilic times centuries later. Now, according to a New York […]
Human Common Ancestor Lived 3500 Years Ago
September 29, 2004
Nature Science Update reported on a surprising find by Joseph Change (Yale) and Douglas Rohde (MIT). They claim, based on computer modeling of human breeding and migration, that we are all related to the same common ancestor, not millions, but just thousands of years ago, possibly just 1500 BC in Asia, and that perhaps a […]
Solar Wind Erodes Mars Atmosphere
September 28, 2004
Physics Web has a summary of a report that appeared in Science Sept. 24.1 First results from an experiment on ESA’s Mars Express called Analyzer of Space Plasma and Energetic Atoms (ASPERA-3) are in. They show that the solar wind penetrates deep into Mars’ atmosphere, as far as 270 km above the Martian surface. Since […]
Big Science Portrays Embryonic Stem Cell Issue as Political Litmus Test
September 27, 2004
The number of articles in scientific journals on embryonic stem cell research (also called “therapeutic cloning”) has been on the rise, particularly those referring to Britain’s or John Kerry’s support of it (see 08/11/2004 editorial), and Germany’s or Bush’s opposition to it. Though science journals are expected to be above politics, on this issue their […]
Darwinian Just-So Story Criticized
September 27, 2004
When Young and Brodie & son published their article “How the Horned Lizard Got its Horns,” (see 04/01/2004 headline), they apparently meant it as a bit of April-fool joke, not a real Kipling-style just-so story. Several respondents in the Sept 24 issue of Science,1 however, either didn’t think it was funny or concluded the story […]
Big Pieces Missing in Darwins Theory, Says USC Scientist
September 27, 2004
A USC professor of gerontology has “explored a new way to look at aging that directly opposes principles set forth by Darwin in his theory of natural selection,” reports EurekAlert (Emphasis added in all quotes). Valter Longo’s theory of aging employs group selection instead of individual selection (see 05/31/2004 headline). He thinks that in […]
Does Psychology Find Anything New Under the Skull?
September 25, 2004
Two recent psychological reports seem to either state the obvious or underscore teachings of old-time religion. Coping: EurekAlert tells about a University of Washington study that concluded, “Americans had strong need for spiritual support following 9/11 attacks.” Strangely, Christians and Jews, who believed in forgiveness, seemed to do better than Muslims who believed in retaliation. […]
Clean-Air Laws and Tree-Planting Cause Increased Air Pollution?
September 24, 2004
A major source of volatile organic compounds (VOCs), precursors of ozone pollution, is tree leaves, says a report in EurekAlert. Surprisingly, the increase in trees due to abandoned farms has worsened the pollution. Industry-caused nitrogen-oxygen (NOx) compounds also lead to ozone, and it is not clear how these sources interact. Nevertheless, it appears that reductions […]
Update: Intelligent Design Paper
September 24, 2004
The controversy over Stephen Meyer’s intelligent design paper (see 09/16/2004 headline) continues. Science printed a brief but dismissive news item claiming its publication was a mistake, but journal editor Rick Sternberg has answered the charges on his personal website. Meyer has responded to criticisms leveled by Richard Monastersky in the Chronicle of Education. The Discovery […]
Name-Calling at the Human Evolution Meeting
September 23, 2004
As predicted earlier this month (see 09/03/2004 commentary), Lucy’s lovers were not going to take her demotion lying down. Proponents of Orrorin claim their 6 million year old rival walked upright millions of years before the 2-4 million year old australopithecines, and even had a gait more human-like than Lucy. To Ann Gibbons, reporting in […]
Cell Exhibits Robust Engineering Design
September 22, 2004
Cells are so good at robustness against perturbations and uncertainty, engineers could well learn from their design principles.
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