Event:
A study conducted at the University of Rochester Medical Center in Rochester, New York, announces the a harmful type of space radiation may accelerate the development of Alzheimer's disease
More Notable Events on December 31:
1999 Control of Panama Canal reverts to Panama
1997 Microsoft buys Hotmail E-mail service
1993 Barbra Striesand does her 1st live public concert in 20 years
1991 U.S.S.R., last day of existence
1990 Sci-Fi Channel on cable TV begins transmitting
