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Darwin and Evolution

Life, an Elegantly Simple Mistake
April 12, 2010
The ribosome is a complex molecular machine made up of multiple protein and RNA parts.  Last year, winners of the Nobel Prize in Chemistry (see 10/10/2009) were praised for elucidating the structure and activity of ribosomes.  News stories described “the whole complicated process of transcription initiation, an operation that is of crucial importance in all […]
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Cosmology

You Live in a Wormhole in a Black Hole
April 10, 2010
Is it publish or perish time?  A physicist at Indiana University thinks that “our universe could have itself formed from inside a black hole existing inside another universe.”  Let Nikodem Paplowski explain his idea: But he also notes that since observers can only see the outside of the black hole, the interior cannot be observed […]
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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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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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Cosmology

The Whole Universe Is Crazy
March 19, 2010
Suppose you engaged a mental patient about the origin of the universe.  He tells you that it banged and it whooshed and it crunched.  He elaborates and says that there’s lots of universes out there crashing into each other all the time.  “Yep, that’s how it happened, and that’s how we got here.  I’s sure […]
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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

Robotic Pothole Crew Keeps Your Genetic Highways in Good Repair
March 14, 2010
What a thought – a repair crew of molecular machines roaming the strands of your DNA, fixing errors 24 x 7.  It happens.  New techniques are showing the machines jumping from strand to strand like fleas, stopping at suspicious points, and fixing errors, reported Science Daily.  Dr. Bennett Van Houten (U of Pittsburgh Cancer Institute) […]
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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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Amazing Facts

This Tree of Life Is Real
March 9, 2010
Imagine a tree that can provide both nutritious food and clean water.  Moringa oleifera is such a tree.  It grows in Africa and Asia and is being looked at as a life-giving plant that can reduce bacterial contamination of water by 90 to 99.99% by filtering water with its seeds.     Science Daily has […]
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Cell Biology

Life Crams Stuff on the Long Road
March 7, 2010
This quote from UC Berkeley wins Stupid Evolution Quote of the Week: In the long evolutionary road from bacteria to humans, a major milestone occurred some 1.5 billion years ago when microbes started building closets for all their stuff, storing DNA inside a nucleus, for example, or cramming all the energy machinery inside mitochondria. Any […]
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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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