Inventions allow humans to move across, beneath and above Earth's surface.
Innovations in medicine, photography and astronomy enhance human understanding.
Humans endeavor to explore space.
Humans help to shape the world.
NASA technology becomes commonplace in ordinary homes.
The two largest aircraft manufacturers have competing visions.
The intricate design of a gecko's feet are studied; a spider's silk is shown to be able to stop a plane.
Scientists reveal how people look at facial symmetry as a sign of good genes; they explain how humans are biologically programmed to do so.
One of the world's largest ice caps is melting; with the water flowing into the Atlantic, it could plunge the Northern Hemisphere into a new ice age.
The connections between food and feelings are revealed, including a look at whether or not chocolate can combat crime, and using diet to defeat depression.
A father and son are lost while skiing in Turkey; after watching rescue helicopters pass them by, a desperate strategy is employed to get help.
People dealing with phobias.
Researchers study the symmetry of the human face.
Scientists try to figure out why the Greenland ice cap is melting at a rapid pace.
Kent Cullers and fellow scientists search the solar system for sounds of alien life.
The importance of sleep.
Scientists study the impact of stress on a person's health.
While scents prove to be responsible for much of what can be tasted, scientists also discover that scent can regulate a person's emotional state.
A doctor claims they have found a genetic switch that can slow down the aging process; some people believe experimental pills and potions can keep them young.
An ice-cold shower is shown to help stimulate memory; a jazz musician remembers his piano pieces by using fish food and sleep.
Story of communication from drums to the digital revolution.
Life evolves from a single cell to millions of species.
The complexity of the human mind and body.
Advances in science and technology.