Unlike with animals, artifacts in the fossil record of bacteria and archaea offer very little information for analysis. Fossils of ancient prokaryotes look like tiny bubbles in rock. How might scientists investigate their evolution and diversity in view of this challenge?

economic impact of malaria is estimated to cost africa $12 billion every year. this figure factors in costs of health care, absenteeism, days lost in education, decreased productivity due to brain damage from cerebral malaria, and loss of investment and tourism.

supercell thunderstorms are perhaps the most violent of all thunderstorm types, and are capable of producing damaging winds, large hail, and weak-to-violent tornadoes