Free Republic

This is an image of an aged stem cell after growth factors were added. A new method of growing cardiac tissue is teaching old stem cells new tricks. The discovery, which transforms aged stem cells into cells that function like much younger ones, may one day enable scientists to grow cardiac patches for damaged or diseased hearts from a patient's own stem cells—no matter what age the patient—while avoiding the threat of rejection. Stem cell therapies involving donated bone marrow stem cells run the risk of patient rejection in a portion of the population, argues Milica Radisic, Canada Research Chair...

The difference between K-12 and P-16 is more than a shuffling of letters and numbers in the proposal outlined Monday by Jack O'Connell, the state's superintendent of public instruction. California's philosophical approach to education would gain five years and a broader scope under goals O'Connell set for the state's children in his annual address on the condition of public schooling. O'Connell advocated state-sponsored preschool available free to all 4-year-olds whose parents want them to attend. Instead of a system that begins with kindergarten and ends with the senior year of high school, he said California should approach education as a...