1.) the absorption of extreme energy sources (UV light, radiation) 2.) endogenous reactions when oxygen is reduced to water created by systems involved in electron and oxygen transport (redox reactions) 3.) enzymatic metabolism of exogenous chemicals or drugs.
Back to Episode. John Horgan examines how Americans seem to have a completely different attitude toward war than we did thirty years ago. Strangely, everyone seems to know the answer. Robert Sapolsky brings us farther afield - to eastern Africa, where a population of baboons defies his expectations of violent behavior.
Army Ants. One of the most maligned predators in the tropics are the army ants a name that is applied loosely to many species in several genera on several continents. In some places, usually Africa, they are called driver ants. What they all have in common is a tendency to forage communally - in huge groups.