Day: 8 November 2006

Ducks for Desalination

ducky thingWater is becoming more precious round the world, yet the oceans are filled with the wet. If someone found a way to turn salty water into potable water easily and cheaply there would be a lot less thirsty people out there.

Stephen Salter at Edinburgh University has found a way to use the power of waves to remove salt from water. Desalination takes a lot of energy and by using waves, the energy cost obviously is a lot lower. The system is shaped like a duck and works by popping in the water and using that force to steam water for clean, drinkable goodness.

THe inventor also invented the first system to use wave energy for electric power and he was inspired to make this system from a trip to India.
“I visited India just after they had missed two monsoons and water was becoming a worry,” Salter told New Scientist. “I thought that using wave power for desalination would be a neat idea.”

Gender Bender in NYC

New York City is moving ahead with a proposed change in the rules of birth certificates. After much campaigning from activists who argue that gender is not merely physical, NYC will soon start letting people change their gender on their birth certificates (NYT link, to bypass registration try bugmenot). Reader mkb also points out this article .

Once it’s approved people will no longer have to have sex-change surgery to proclaim what gender they are.

“If approved, the new rule would put New York at the forefront of efforts to redefine gender. A handful of states do not require surgery for such birth certificate changes, but in some of those cases patients are still not allowed to make the change without showing a physiological shift to the opposite gender.”

Thanks, mkb!