Breakthrough of the year. Scorecard '99.
D000544:Alzheimer Disease; D055580:Astronomical Phenomena; D001256:Astronomy; D003205:Computing Methodologies; D017753:Ecosystem; D005544:Forecasting; D006801:Humans; D008967:Molecular Biology; D011051:Poliomyelitis / Q000453:epidemiology; D012106:Research / Q000639:trends