Biology – Page 132

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Nanofabrication Imitates Shells, Butterflies

October 7, 2007

A new plastic “strong as steel” has been manufactured according to the specs in seashells, reported PhysOrg. “By mimicking a brick-and-mortar molecular structure found in seashells, University of Michigan researchers created a composite plastic that’s as strong as steel but lighter and transparent.” (See these previous entries about how marine organisms manufacture their shells: 06/26/2003, […]

Biomimetics

New Atomizer Mimics Bombardier Beetle

October 2, 2007

There’s a new technology coming to market, thanks to a little bug. The bombardier beetle has long been used by creationists as a creature with a weapon against evolutionary theory. Its tightly-integrated combustion apparatus would be useless or dangerous to the beetle unless all the parts worked together from the start. This, creationists argue, is […]

Amazing Facts

Bacteria and Plants Know Network Tech

October 1, 2007

An article on Science Daily says, “plants have their own chat systems that they can use to warn each other.” Many herbal plants such as strawberry, clover, reed and ground elder naturally form networks. Individual plants remain connected with each other for a certain period of time by means of runners. These connections enable the […]

Dumb Ideas

Early Beetle Was Armed

September 23, 2007

According to Live Science, a beetle preserved in amber, dated at 100 million years old, was caught in the act of using chemical warfare. “Soldier beetles” capable of this kind of advanced defense system were not thought to have evolved till 60 million years later. This article contains several statements worthy of the […]

Biomimetics

Thermodynamics: The Real Theory of Everything

September 23, 2007

Need a theory of everything? Try thermodynamics. Mark Haw reviewed a new book by Peter Atkins on the subject in Nature,1 Four Laws that Drive the Universe (Oxford, 2007). He had high praise for the achievements of the “19th century grandees” Joule, Maxwell and Kelvin: Thermodynamics ought to be the cornerstone of any scientist’s understanding […]

Birds

Was Velociraptor a Dragon?

September 22, 2007

As if Velociraptor, the terror of Jurassic Park, was not scary enough, some scientists are now saying it was feathered. (This, of course, does not imply it could fly after its human prey like some movie dragon.) The latest claim in Science is based on the apparent presence of “quill knobs” on the radius bone […]

Dumb Ideas

Early Reptile Had Modern Ears

September 18, 2007

Modern ears are nothing new; they go back 260 million years. That’s the gist of a paper in PLoS ONE that reported on a Russian reptile fossil.1 The research team was surprised to discover that the creature had impedance-matched ears, a novelty thought to have evolved 50 million years later. Somehow this innovation survived one […]

Amazing Facts

New World Record for Winged Migration

September 11, 2007

The BBC News reports that a female bar-tailed godwit flew 11,500km (almost 7200 mi) nonstop from Alaska to New Zealand. The journey took about a week. Observers at Massey University used electronic tags to catalog the birds’ flight. This distance is nearly double what ornithologists used to consider an “extremely long” flight. This […]

Birds

Dinosaurs Stretched, Shrunk and Twisted Into Birds

September 6, 2007

Size matters, thought paleontologists envisioning the evolution of birds from dinosaurs. The old story was that dinosaurs shrunk as their arms were becoming wings. That view has been challenged by a new fossil reported in Science.1 Alan H. Turner (American Museum of Natural History) and four others reported a “basal dromeosaurid” that was small long […]

Mammals

Whale Sonar: Necessity Is the Mother of Invention

September 5, 2007

Biosonar is a complex ability possessed by toothed whales and dolphins, bats and some birds. It includes both the ability to produce signals and to process the echoes to locate prey. How could such a system evolve? Scientists at UC Berkeley proposed an answer. The press release promised a developing story: Behind the sailor’s lore […]

Birds

Birds Eat Dark Moths, Therefore God Does Not Exist

September 3, 2007

Michael Majerus watched birds eat peppered moths from his window for seven years (06/25/2004), then drew his conclusions. In a presentation to a science conference in Uppsala, Sweden on August 23, he said that the peppered moth story proves evolution, which means there is no supernatural being to save us, there is no second coming, […]

Darwin and Evolution

Evolution Takes Credit

August 24, 2007

It may be more blessed to give than to receive, but evolution often just takes.

Early Man

Fossil Gorilla Forces Hominid Ancestor Earlier

August 23, 2007

A set of gorilla teeth found in Ethiopia pushes the evolutionary story of a split between apes and humans back almost twice as far as previously thought. Nature reported the fossil announcement that estimated the date of the teeth as 10.5-11 million years old.1 The prior estimate for a human-ape divergence was about 6 million. […]

Biomimetics

Two Ways to Look at a Fin

August 21, 2007

Two science articles this month showed very different ways to look at a fish fin. One looked for evolution; the other looked for design. One tried to trace an evolutionary story with no practical application; the other tried to find ways to improve our lives. The evolutionary story involved a fossil coelacanth. Science […]

Amazing Facts

Crows Use Tools on Tools

August 21, 2007

Crows can use one tool on another to get food. A report in Science Daily says they appear to use analogical reasoning, not just trial and error, to figure out how to manipulate objects. They used a short stick to get a longer stick out of a toolbox in order to reach a snack too […]

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