The nation's organ transplant network will consider a controversial proposal Monday to overhaul the guidelines for an increasingly common form of organ donation.
The board of directors of the United Network for Organ Sharing will open a two-day meeting at the organization's headquarters in Richmond, Va., to consider new guidelines for donation after cardiac death.
Donation after cardiac death involves removing organs minutes after life-support has been stopped for patients who still have at least some brain activity.
The Chicago Housing Authority has torn down all of its high rises and says it's close to completing its plans to transform public housing. Now, city leaders are moving to the next part of their plan: using public housing funds not just to build homes for poor families, but stores where they could shop and work. Some residents, however, say the city is breaking a promise to provide affordable housing.
It used to be that if astronomers wanted to get rid of the blurring effects of the atmosphere, they had to put their telescopes in space. But a technology called adaptive optics has changed all that.
Adaptive optics systems use computers to analyze the light coming from a star, and then compensate for changes wrought by the atmosphere, using mirrors that can change their shapes up to 1,000 times per second. The result: To anyone on Earth peering through the telescope, the star looks like the single point of light it really is.