Student scientists from the United States and around the world are converging in South Africa this month in what is likely to be one of the largest-ever international gatherings of teenage researchers.

As Julien Wang wraps up work on her master's degree and interviews for a job focused on air pollution or energy policy, it looks like she's come a long way from the big, dirty city in northern China where she was born.

Julien Wang, Significant Opportunities in Atmospheric Research and Science (SOARS) • When it came time to choose a major, Wang was torn between the arts and her growing interest in the environment. Finally, she chose environmental engineering. One recent project: designing a green roof.

Ed Geary hasn't shied away from wearing multiple hats. A geologist by training, he combines science, education, and international collaboration in his role as director of a worldwide science education program.

Eric J. Barron was named director of NCAR today, following a rigorous international search.