Carbon dioxide diffuses out of the tissues and into the blood, where it is dissolved in the plasma. While some of the carbon dioxide remains dissolved in the plasma, most carbon dioxide diffuses into our red blood cells.
A screencast is a digital movie in which the setting is partly or wholly a computer screen, and in which audio narration describes the on-screen action. It's not a new idea.
Datacasting is a targeted, encrypted communications technology that can wirelessly deliver video and other data to specific recipients across a very wide area. It accomplishes this by using the broadcast frequencies of public television stations, which have expansive and reliable coverage over cities, towns and regions.