music: 70's Chart Toppers: Name The Artist: Can't Smile Without You?

Questions

What type of accident happened at Chernobyl in the USSR in 1986?

In the 1960's, a tranquilizing drug, thought to have no harmful effects, was marketed in Britain and other countries as a therapy for morning sickness, resulting in the birth of hundreds of deformed babies Name the drug?

What are the scientists who study volcanoes called?

Which three sectarian groups are involved in the conflict in Bosnia and Herzogovina?

Name the American space shuttle, its crew including a teacher, which exploded killing all on board after lift-off?