Another indication of the importance of education quality to economic growth lies in our ability to explain global variation in GDP growth. (educationnext.org)
Han, Q., W.B. Rossow, J. Chou, and R.M. Welch, 1998: Global variations of column droplet concentration in low - level clouds. (pubs.giss.nasa.gov)
Furthermore, global variations in academic institutions and promotion systems pose a serious challenge for sustaining globalized careers. (science.sciencemag.org)