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Amazing Facts

How Plants Send Email: Update
October 4, 2004
href=”crev07.htm#plant17″>07/13/2001 headline), we reported the startling finding that plants talk to themselves in email.  What’s new in this field?  Is there really an interplant intranet?     In the Oct. 5 issue of Current Biology,1 Norman, Frederick and Sieburth report evidence that a signal molecule named BYPASS1 is sent from the roots to the tips […]
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Politics and Ethics

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 […]
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Amazing Facts

Introducing: The Spinach Cell Phone
September 21, 2004
The next spinach sandwich you hear about may not be an item at the health food bar but an electronic device powered by the sun.  According to an MIT press release, chloroplasts from spinach leaves have been successfully sandwiched into a solid-state electronic photocell that could be used before long to power cell phones and […]
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Amazing Facts

Plants Use Quantum Mechanics to Harvest Light
September 16, 2004
In a News and Views item in Nature Sept. 16,1 Graham R. Fleming (UC Berkeley) and Gregory R. Scholes (U Toronto) explain how the light-harvesting centers of plant photosynthetic organs take advantage of quantum mechanics to focus energy on their reaction centers.  Their illustration shows a chromophore diagram from a photosynthetic bacterium.  Understanding energy transfer […]
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Fossils

Plants Found Two Miles Under Greenland Ice
August 16, 2004
According to a press release from University of Colorado,1 remnants of pine needles, bark and grass have been pulled up in an ice core from two miles under the Greenland ice sheet, between the bottom of the ice sheet and bedrock.  This is the first time plant material has been found under the Greenland ice, […]
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Mammals

Hire a Gopher to Rototill Your Land
August 2, 2004
We may holler at them when they dig up our lawns and gardens, but pocket gophers are an important part of the ecosystem, say Jim Reichman and Eric Seabloom in a UC Santa Barbara press release.  They change the nutrient availability for plants, among many things: They act like little rototillers, loosening and aerating the […]
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Uncategorized

Plant “Evolutionary Leftover” Now Deemed Vital
July 22, 2004
Photorespiration, “a biological process in plants, thought to be useless and even wasteful” and “just an evolutionary leftover” from an age when carbon dioxide was more prevalent, has been found to be “necessary for healthy plant growth and if impaired could inhibit plant growth,” according to a UC Davis study published in PNAS.1 (see also […]
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Botany

Fungi Supply Plant Communities With Underground Nutrient Pipeline
June 17, 2004
Dig up a cubic yard of soil, and you may have disturbed 12,000 miles of an extensive network of passageways that supply plant roots with carbon, nitrogen, and phosphorus.
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Health

Weeds to Your Health
June 8, 2004
Why traverse the rain forests for miracle drugs, EurekAlert asks, when the weeds we yank out of our gardens may hold promise for curing a host of common health woes.  John Richard Stepp (University of Florida) claims that fast-growing, herbaceous field plants are more likely to hold useful substances than those deep in jungles.  Indigenous […]
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Dumb Ideas

Plant Evolution Modeled in Computer
May 24, 2004
Simulation games are popular on computers.  Darwinian biologists seem to like them, too.  What they cannot go back in time to observe, they sometimes try to recreate in silico, inside the silicon chips of a computer.  Karl J. Niklas (Cornell) tried to simulate plant evolution, and wrote about it in Annual Review of Earth and […]
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Fossils

Fossil Water Lily Matches Modern
May 19, 2004
Three Cornell botanists found fossil water lilies from the early Cretaceous that look nearly identical to modern ones, except that they are smaller.  The exquisitely-detailed fossils were preserved in a New Jersey clay pit by a process of coalification.  Water lilies (family Nymphaeaceae) are presumed by evolutionists to be among the earliest flowering plants (angiosperms).  […]
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Uncategorized

Can Traits Evolve Before Need?  The Case of California Chaparral Plants
May 18, 2004
A biologist went to California looking for evolution in plants.  He didn’t find it, but believes the plants evolved anyway.     That seems to be the upshot of a study by David D. Ackerly (Stanford U.) published in American Naturalist1 (see summary on EurekAlert).  Ackerly wanted to test whether natural selection produced the small, […]
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Darwin and Evolution

Can Evolution Create Homologous Structures by Different Paths?
April 22, 2004
Günter Thebien (Friedrich Schuller U, Jena, Germany) is baffled about how two plants arrived at similar structures by different evolutionary pathways. In the April 22 issue of Nature,1 he asks, Structures that occur in closely related organisms and that look the same are usually considered to be homologous – their similarity is taken to arise […]
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Amazing Facts

How Tall Can a Tree Grow?
April 22, 2004
130 meters (426 ft) seems to be the upper limit on the height of a tree, say researchers from Humboldt State, Northern Arizona University and Pepperdine University, in the April 22 issue of Nature.1  To find this out, they had to establish working stations at the tops of northern California redwoods, the tallest trees on […]
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Uncategorized

Evolutionary Cul-de-Sacs: Ferns Debunk Another Evolutionary Principle
April 2, 2004
“The principle of the evolutionary cul-de-sac is commonly invoked to explain the apparent lingering existence of once-diverse groups of organisms,” writes Torsten Eriksson in the April 1 issue of Nature.1  “Maybe that principle itself has had its day.”     The case in point are ferns, which long had been thought to have been pushed […]
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