Denial of student visas leads to brain drain from university research

America's move to shut the gate on student visas after the terrorist attack on the Twin Towers, has created a brain drain for universities that rely on top foreign students to help with scientific research. Professors, graduate school deans and officials from national science societies say hundreds of foreign students recruited to work on projects in such areas as physics, math and petroleum engineering they couldn't get visas this fall. Some gave up and went to other countries instead (2 pages).