Biology – Page 118

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For His Birthday, Darwin Gets a Scrambled Arthropod Tree

February 12, 2010

If Darwin lost his tree last year (01/22/2009), it would seem any corrections or rearrangements would be academic. Nevertheless, eight evolutionary biologists at Duke University tried rearranging one of the biggest branches on Darwin’s tree of common ancestry – the highly diverse group known as arthropods (animals with jointed appendages). Arthropods comprise the largest number […]

Darwin and Evolution

More Surprises for Darwin

February 11, 2010

It’s not uncommon for theories to have to deal with anomalies, but Darwinism sure seems to get more than its share. Here are some recent examples. Fossils lie: Fossils preserve unmistakable clues about past life, right? Not so fast. Nature reported that “Non-random decay of chordate characters causes bias in fossil interpretation.”1 The way early […]

Amazing Facts

Life Masters Physics

February 10, 2010

Living things, especially cells, have mastered the forces of advanced physics in ingenious ways. This ingenuity sometimes inspires physicists to try to copy it. Here are some recent examples: Photosynthesis and quantum mechanics: Nature reported that plants take advantage of quantum mechanics in photosynthesis.1 “The photosynthetic apparatus of cryptophyte algae is odd – its pigments […]

Birds

Dinosaurs Evolved from Birds

February 9, 2010

Birds evolved from dinosaurs, we are often told. That’s backwards, reply some scientists at Oregon State University. According to PhysOrg, the recently-published bi-plane model study of Microraptor gui (01/29/2010) demonstrates that theropod dinosaurs did not sprout wings and fly; instead, they became flightless after their bird ancestors came down from the trees. Their […]

Fossils

Incredible Preservation of Beetle Wings Found

February 9, 2010

Beetle wings with their original shimmering luster have been found preserved in fossilized peat in Japan. The strata in which they were found have been labeled middle Pleistocene and dated at 600,000 years old. Yet these same wings, when dried in the sun, lose their luster within hours. The authors of the paper […]

Amazing Facts

Spider Webs Are Precision Dew Collectors

February 4, 2010

Photographs of dew drops on spider webs are favorite targets for nature photographers, because they resemble strings of pearls on fine jewelry (example 1, example 2). But did you know the reason dewdrops bead up so well on webs is due to the fine microstructure of the spider silk? A team of Chinese scientists studied […]

Darwin and Evolution

Scientists Divine Deep Time in Dead Fish

January 30, 2010

Scientific experiments can certainly take on a wide variety of methods, from recreating the atmosphere of Titan to testing a drug on a genetic disease. But if educators want to encourage students to become scientists, they had best keep silent about “some very unpleasant experiments” at the University of Leicester reported by the BBC News. […]

Birds

Incredible Creatures that Support Evolution?

January 29, 2010

Paleontologists and biologists continue to uncover animals past and present that exhibit amazing diversity. Some of them are so weird and unexpected, they are almost unbelievable. Usually, the news media are quick to tally up points for Darwin by explaining to lay people how they shed light on evolution. But in the “discovery” stage of […]

Darwin and Evolution

Convergence: Explanation or Rescue Device?

January 26, 2010

The news media are telling us that bats and dolphins both hit on the same genetic pathway to evolve echolocation – even though they are on vastly different evolutionary lineages and use echolocation differently (one in air, one in water). Since it is inconceivable that a putative shrew-like common ancestor of these very different animals […]

Dumb Ideas

Chimps Produce Movie

January 25, 2010

The BBC is going to air a movie made by chimpanzees. (Note: This is not a Planet of the Apes remake.) A primatologist working on her PhD gave some chimps at the Edinburgh zoo a “Chimpcam,” a camcorder in a “chimp-proof” box, to see what they would come up with. “Despite the fact that the […]

Darwin and Evolution

Evolutionary Biogeography Requires Imagination

January 22, 2010

Biogeography – the study of the distribution of species – has been an important part of evolutionary theory, and has often been used as evidence for evolution. Some recent findings about plants and animals should give scientists caution about trying to divine too much evolutionary history from locations of present-day organisms and fossils. […]

Darwin and Evolution

Dogs for Darwin

January 21, 2010

Science Daily shamelessly announced, “‘Survival of the Cutest’ Proves Darwin Right.” Chris Klingenberg and Abby Drake, who published a study on mammal skull shapes in American Naturalist on dog breeds, said, “This study illustrates the power of Darwinian selection with so much variation produced in such a short period of time. The evidence […]

Fossils

Specious Theories Obey the Law of Inertia

January 15, 2010

Last March, scientists publishing in Geology falsified the so-called “Permian Extinction,” calling it a “non-event.” (see 03/09/2009). Not only was there no smoking gun of a catastrophe in the rocks, the scientists said that the “claims of rapid vertebrate recovery… also must be called into question.” Our commentary at the time wondered how long it […]

Amazing Facts

Arctic Tern Maintains World Record Title

January 14, 2010

The arctic tern makes a marathoner look like a wimp. This little bird has been confirmed as the migratory bird with the longest route, flying annually from pole to pole. A team of international scientists obtained the results by using an implanted geolocator on several birds, and tracking their actual path. The story is told […]

Cosmology

What Value Do Evolutionary Explanations Provide?

January 13, 2010

We want value for our science dollars. We know artists are into self-expression, but scientists need to offer more than just artistic prose: they are supposed to be in the knowledge generation business. So we expect to gain one of two things from their scientific explanations. One, we would like to gain practical knowledge that […]

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