For many years the general body surface has been recognized as the primitive site of respiratory gas exchange in the animal kingdom. Even in simple animals such as the sea anemones, however, some ...

Whether it is nitrogen for cleaning weapons and night vision devices, oxygen and acetylene for welding and torch operations, or tetrafluoroethane to keep air conditioning systems blowing cold, ...

— -- A star-studded cast of energy and environmental brokers and investors is launching a new exchange for trading credits that offset the greenhouse gas emissions that cause global warming. The ...

Researchers report development of a low-cost carbon filter that can remove 90 percent of carbon dioxide gas from the smokestacks of electric power plants that burn coal and other fossil fuels. The new ...