South Korean scientists have announced the creation of a World Stem Cell Foundation, to be headquartered at Seoul National University but with tentacles reaching to the United States, the United Kingdom and beyond.The new venture, unveiled early Wednesday morning, is intended to accelerate international progress in the field by bypassing ethical and regulatory constraints in the United States, according to Dr. Susan Okie, who wrote a perspective article in the Oct. 20 issue of the New England Journal of Medicine that was released to coincide with the Seoul announcement.