Thomas J. Nasca, MD, MACP, Chief Executive Officer, Accreditation Council for Graduate Medical Education, and Chief Executive Officer of ACGME International; Professor of Medicine (vol.), Jefferson ...

(Phys.org)—A team of researchers led by Rosa Lasaponara with the Institute of Methodologies for Environmental Analysis, in Italy has found evidence that suggests that the purpose of the spiral, ...

At the height of their power, the Nasca had mastered the craft of weaving elaborate textiles and the art of painting fine, multicoloured pottery. They etched giant figures in the desert that only made ...

Dr. Thomas J. Nasca, president and CEO of the Accreditation Council of Graduate Medical Education, will step down next year after 17 years at the helm of the Chicago-based organization. He'll be ...

This story appears in the March 2010 issue of National Geographic magazine. From the air, the lines etched in the floor of the desert were hard to see, like drawings left in the sun too long. As our ...