Nearly 90% of the United States population has at least one caffeinated beverage every day. Learn about the chemistry of caffeine, how it causes increased alertness and focus, and how caffeine is capable of causing overdoses.
National Geographic Explorer Carlton Ward, Jr., has spent 10 years documenting the elusive Florida panther. unisciti him in the field as he sets up camera traps and shares his passion for protecting Florida's wildlife corridor. …
