Scientists say nerves use sound, not electricity

By CBC News Mar 09, 2007 7:13 PM ET

Copenhagen University researchers say that nerves transmit impulses through sound, not through electricity as text books say. They note the experimental observation that no heat is generated from impulses traveling through nerves–– a contradiction against thermodynamic laws if electricity is indeed the nature of the impulses. Researchers Heimburg and Jackson theorize that sound propagation through a special kind of sound pulse called “soliton” is a much more likely explanation. In a medium with the right physical properties, such as the oil-like nerve membrane which can transition between liquid and solid phase through temperature variations, solitons can propagate without spreading or losing strength. This research is published in Biophysical Journal.

Ceres’ White Spots Multiply in Latest Dawn Photos


Ceres-Tom-Ruen-montage-May-11The latest images taken by the Dawn spacecraft shows that the pair of bright, reflective spots on the dwarf planet Ceres are comprised of even more spots. Ceres is the largest object in the asteroid belt, which lies between the orbits of Mars and Jupiter, and makes up approximately a third of the mass of the asteroid belt.[1]

[1]Wikipedia, “Ceres.”

MIT Group Used Solar Energy To Make Salty Water Drinkable In Off-Grid Areas


o-USAID-570A group of engineers from MIT invented a system that relies on solar energy to bring water to rural areas in India. Instead of relying only on electricity, this system uses electrodialysis– employing solar power to charge up lead-acid batteries, which would in turn charge up electroactive membranes that act like magnets for the positive and negative ions of dissolved salt in the water. This system is low-cost, and can desalt 2,100 gallons of water per day.

Scientists Say They’ve Created A Freaky New Form Of Light


 | By  Posted: 09/16/2014 8:46 am EDT Updated: 09/16/2014 1:59 pm EDT

The experimental apparatus is mounted inside a special refrigerator capable of reaching temperatures 1/100th of a degree above absolute zero.

Researchers at Princeton University turned light into crystals– essentially creating “solid light.” An assembly of 100 billion atoms of superconducting material, creating a sort of “artificial atom,” was placed near a superconducting wire containing photons. This arrangement artificially created a very strong interaction among the photons through quantum entanglement, leading to a new collective behavior of light akin to that of condensed matter.