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Evolution as Efficiency Expert

Who would have thought that a lowly bacterium is a “master of industrial efficiency”?  That’s what a researcher at the Weizmann Institute of Science called it.  E. coli, the best-studied microbe, “can be thought of as a factory with just one product: itself,” a press release said.  “It exists to make copies of itself, and […]

Corn Is Fuel in More Ways than One

There’s been controversy lately about the diversion of corn crops from food for humans to ethanol for engines.  Why not both?  A new pilot program announced by Fraunhofer-Gesellschaft saves the corn cobs for eating but makes ethanol out of the straw.  If so, this would make the whole plant an energy factory for the human […]

Biology Now Includes Fluid Dynamic Construction

There’s an old legend that Tibetan monks built a wall by levitating heavy stones with sound by beating their drums and gongs.  Something not quite so fantastic but still amazing is done by cells in the embryo.  Scientists have filmed zebrafish embryos using beating cilia to build little stone structures that they use for balance. […]

Watch for Flying Giraffes (and Convergent Evolutionists)

Imagine giraffe-sized animals that could fly.  They lived.  National Geographic News has an illustration of an extinct pterosaur, tall as a giraffe, that was able to leap into the air and flap its wings for sustained powered flight.     Live Science discussed work by Michael Habib [Johns Hopkins U School of Medicine] on the […]

Your Brain Decides Best Unconsciously

A report on Science Daily claims your subconscious brain makes the best decisions possible.  This is based on work by cognitive neuroscientists at the University of Rochester.  Alex Pouget believes the brain is hard-wired to make optimal decisions – when we are not consciously thinking about them. Pouget has been demonstrating for years that certain […]

Handy Motor Found in Virus

Your job today is to stuff a delicate chain into a barrel without breaking it and make it wrap neatly inside.  A tiny virus does this with helping hands, reported Purdue University.  A research team uncovered the mechanism of a “powerful molecular motor” that crams the viral DNA tightly into the capsid with the help […]

Plants Heal Humans and Vice Versa

Flowers in your hospital room do actually make you heal faster.  A study by Kansas State researchers reported by PhysOrg found that more patients recovered from abdominal surgery faster with flowers in the room.  It may be due to more than the psychological benefit of enjoying their colors, fragrances and the get-well wishes behind them: […]

Cilium Likened to GPS

A story on Science Daily says that the primary cilium, a protrusion on most human cells that looks like an antenna, acts like a GPS system.  They “orient cells to move in the right direction and at the speed needed to heal wounds, much like a Global Positioning System helps ships navigate to their destinations.” […]

Fish and Reptiles Converge on Magnetic Navigation

Two very different kinds of animal both have outstanding ability to navigate by earth’s magnetic field: salmon and sea turtles.  A new hypothesis by scientists at University of North Carolina at Chapel Hill, published in PNAS,1 suggests that the young are “imprinted” with their local magnetic field signature at birth. From a navigational perspective, some […]

Fly Swiftly

The common swift is being eyed by aircraft engineers who want to go fast, high, and green.  Science Daily says these engineers are “inspired by nature.”     Calling Apus apus a common “swift” is like calling an orange an orange.  They are swift!  These incredible birds dart about effortlessly and spend their lives almost […]

Thanks to Clam Design, Stronger Materials Are Coming

Scientists at Lawrence Berkeley National Labs have produced a lightweight composite material 300 times stronger than its constituents.  How?  By taking inspiration from clams.     The team, writing in Science,1 described nacre, the shiny mother-of-pearl found inside clam shells.  Because of the way it sandwiches crystalline aragonite with layers of protein (07/26/2004), nacre resists […]

That Spring in Your Step Is Semi-Automatic

Cross-country runners know the challenge of running on uneven terrain.  What they may not know is that they are executing one of the most difficult operations for robot designers: how to make an upright, walking machine make rapid decisions on irregular surfaces without falling.     Monica Daley of the Royal Veterinary College wrote about […]

Go to the Ant, Thou Farmer

We humans boast too much.  Agribusiness?  Ants have it down to a science.  “One of the most important developments in human civilisation was the practice of sustainable agriculture,” stated Science Daily.  “But we were not the first – ants have been doing it for over 50 million years.  Just as farming helped humans become a […]

Proteins Can Tie Knots

Your job today is to invent a chain that can tie itself in a knot.  The chain can contain little magnets and electrical parts, but when you let go of the ends, a knot will spontaneously form.  This means that one end must form a loop and the other end must thread the loop.  Give […]

Cell Chaperone Is an Optimized Two-Stroke Machine

Proteins need a protected space to fold, and the cell provides it: the GroEL-GroES chaperone (see 05/05/2003, 06/07/2006, and 02/13/2007).  More details keep coming in about this “protein dressing room” as scientists continue to probe its secrets.  Two new papers in PNAS by a team at University of Maryland and College Park reveal that this […]
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