When young loner Anna is hired as the gestational surrogate for Matt, a single man in his 40s who wants a child, the two strangers come to realize this unexpected relationship will quickly challenge their perceptions of connection, boundaries and the particulars of love.

In every female kobudai... is a male in waiting. Animals in the genus Semicossyphus belong to the wrasse family, or the Labridae. Other members of the family and some fish in other families can also change their gender. They develop the reproductive organs, external features, and behavior of the op...

Light as a source of energy is an expression of the existence and life. Light can be defined as that agent, force, or action in nature by the operation of which upon the organs of sight, objects are rendered visible or luminous. Sources of light include the sun, a star, a candle or a lighthouse. Lig...

We are on the threshold of a new era. Our planet's climate is at risk. Natural resources are growing scarce. In 2050, the number of people living in cities will be greater than the entire population of the Earth today. That's why researchers, inventors, and engineers need to be more creative today t...

The major goal at the Department of Cell Biology at Duke University Medical Center is to understand how cells build and regenerate tissue. Scientists work in close collaboration with physicians to combine the power of genetics in model organisms such as the mouse and zebrafish with cutting edge imag...

Light as a source of energy is an expression of the existence and life. Light can be defined as that agent, force, or action in nature by the operation of which upon the organs of sight, objects are rendered visible or luminous. Sources of light include the sun, a star, a candle or a lighthouse. Lig...

This documerntary was produced in 2004 by CBS as part of "Witness", a documentary from CBS news. Origin of AIDS: The Polio Vaccine (CBC 'Witness', 2004) On April 12, 1955 Jonas Salk's polio vaccine was first licensed for public use in the U.S. In the years afterwards 90 million Americans were vac...