Paleontologists studied the oldest discovered bison fossils (bones) to determine when and how they arrived in North America.
Researchers investigated the nutrient content and microbial safety of lettuce grown on the International Space Station.
Scientists wanted to find out whether dinosaurs could have lived year round and nested in the Arctic.
Archaeologists wanted to find out who a person buried in an early medieval grave with jewelry and swords really was.
Scientists investigated the impact of single-food substitutions on carbon emissions and water use.