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Birds

Dino-Feather Story Gets Fluffier
May 1, 2010
Xing Xu is at it again, claiming that dinosaur feathers are found everywhere – in China, at least, where the bulk of “feathered dinosaur” claims keep turning up in farmyards.  The latest claim is that “Feather structures in maturing dinosaurs changed as they grew.”  This story is accompanied by artwork showing the critters looking as […]
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Birds

Clock Gene Same in Humans and Birds
April 29, 2010
Science Daily, this “not only sheds light on how our internal annual body clocks function but also shows a key link between birds and mammals that has been conserved over 300 million years.”     Mammals, including humans, have a hormone released by the pituitary gland that controls melatonin levels – known to affect the […]
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Darwin and Evolution

New Theory on Evolution of Bat Flight
April 27, 2010
How did bats evolve the ability to fly?  Evolution helped them out by providing them with higher energy.  After all, “Flight is among the most energy-consuming activities” in the animal kingdom, said a team of Chinese and Canadian scientists reporting in PNAS,1 so it’s obvious that evolution must have provided the genes to get the […]
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Biomimetics

Blood Clotting Fibers May Lead to Better Networks
April 22, 2010
We all know that blood clotting has kept us alive many times.  We would never have survived childhood scrapes and cuts had it not been for a cascade of responses in blood that builds a network of fibers quickly upon which a scab of tissue stops the flow of blood and begins repairs.  That first […]
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Amazing Facts

Blind Fish Lead the Blind
April 9, 2010
Imagine miniature subs that can negotiate tight spaces or murky waters in the dark.  Meet Snookie: a device created by researchers at the University of Technology Munich, who took their inspiration from blind cave fish.     The report on Live Science says that the blind Mexican cave fish Astyanax mexicanus is born with eyes […]
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Birds

Smelling Evolution in Bird Genes
April 7, 2010
The zebra finch genome has been sequenced; it revealed some surprises.  In the chicken, only 70 of the 500 genes encoding smell receptors produce active proteins.  In the zebra finch, 200 do.  What does this mean?  According to a press release from Weizmann Wonder Wander at the Weizmann Institute in Rehovot, Israel, it means Darwin […]
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Amazing Facts

Leapin’ Lizards: Giant Lizard Discovered
April 7, 2010
A large species of lizard unknown to science has been discovered alive and well in the Philippines.  The BBC News has a picture of the monster, a class of monitor lizard, that measures 2 meters from snout to tail.  That makes it about 2/3 the size of its famous cousin from Java, the Komodo Dragon.  […]
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Darwin and Evolution

Snakes Alive!  An Evolutionary Tale
April 3, 2010
Blind snakes that look like worms: they rule the world.  They’re everywhere.  Where did they come from?  “Blindsnakes are not very pretty, are rarely noticed, and are often mistaken for earthworms,” admits Blair Hedges, professor of biology at Penn State University.  “Nonetheless, they tell a very interesting evolutionary story.”  So reported Science Daily.  National Geographic […]
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Amazing Facts

Elephants Equipped with 4WD
March 30, 2010
An elephant is built like a four-wheel drive vehicle, say scientists from the Royal Veterinary College in London.  Unlike other mammals, which divide acceleration and braking between the front and rear legs, “power is applied independently to each limb,” reported PhysOrg from a paper in PNAS.1 “Elephant limbs operate analogously to four-wheel-drive vehicles,” the authors […]
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Amazing Facts

Biomimetics: Science for Now
March 27, 2010
Do you want science that makes a difference in our lives?  Look at real plants and animals with real solutions to practical problems.  That’s where researchers are making amazing discoveries with practical spinoffs. Shellfish materials:  Strong, lightweight structures are coming, thanks to the imitation of oysters and shellfish.  PhysOrg reported that researchers at the University […]
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Amazing Facts

Beetle Pulls 1,141 Times Its Weight
March 23, 2010
Ever watch those contest shows for the World’s Strongest Man?  Compared to dung beetles, they’re wimps.  Scientists at Queen Mary, University of London found that the strongest beetle tested could pull an astonishing 1,141 times its own weight – “the equivalent of a 70kg person lifting 80 tonnes (the same as six full double-decker buses),” […]
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Amazing Facts

Search for Intraterrestrial Life Scores Big
March 16, 2010
Single-celled organisms may be tiny, but what they lack in bulk they make up for in volume and importance.  Scientists have been appreciating more than ever the ubiquitous presence of microbes on our planet and the roles they play to sustain the biosphere.     PhysOrg reported that half of the world’s life may lie […]
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Amazing Facts

Fruit Flies: From Darwin to Design
March 13, 2010
The fruit fly Drosophila melanogaster is an icon of evolution.  Since the 1930s these poor little bugs have been mutated endlessly and watched for signs of Darwinian change.  So far, though, only useless mutants, unable to survive in the wild, have been produced.  Recently, scientists seem more enamored with their design.  Two recent articles had […]
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Cell Biology

What Good Is Natural Selection without Progress?
March 8, 2010
Three papers recently claim to have seen natural selection.  None of them, however, identified a functional advantage that would have tied changes to novel benefits that could improve a species.  Yeast:  “New Type of Genetic Variation Could Strengthen Natural Selection,” trumpeted a headline in Science Daily.  It was about a study of two varieties of […]
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Amazing Facts

Flight Design: Flies and Birds Get it Wright
March 3, 2010
Parse the following sentence for logical consistency: “Just as the Wright brothers implemented controls to achieve stable airplane flight, flying insects have evolved behavioral strategies that ensure recovery from flight disturbances.”  That is the first sentence from a paper in PNAS yesterday about the stabilizers in fly wings.1  Ristroph et al just compared design principles […]
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