Four Brown students and one alumnus were arrested and jailed in Seattle after taking part in protests against the World Trade Organization....A new study by Brown researchers indicates that the brain releases a marijuana-like substance in response to pain....Planetary geologist James Head and his team have found evidence of an ancient ocean on Mars that dried up hundreds of millions of years ago....President E. Gordon Gee has initiated a comprehensive review of coaching salaries in an effort to uncover any gender disparity.... The University overhauled its e-mail system over Thanksgiving break in order to become Y2K compliant and to allow students to send and receive mail over the Web....Jasmine Waddell '99 was one of thirty-two Americans selected as Rhodes scholars for the year 2000....The Brown-based Physician Leadership on National Drug Policy, an advocacy group that treats drug addiction as a chronic illness, has received $1.35 million in grants to build coalitions with community groups and to conduct educational programs.