For centuries, it was believed that the production of oxygen relied on one component: photosynthesis (the conversion of light ...

Affirm has struck a partnership with Virgin Media O2 to offer pay-over-time financing for devices bought through O2, adding a new payment option alongside the operator’s existing Pay Monthly handset ...

In a combustion reaction, fuel is burned and reacts with oxygen to release energy. Respiration is the chemical change that takes place inside living cells. Glucose and oxygen are used to release ...

A new technique, based on a chain reaction of recognition and hybridization events between two sets of DNA hairpin molecules, offers an enzyme-free alternative for the rapid detection of specific DNA ...

A catalyst is a substance that speeds up a chemical reaction. The catalyst is not used up or chemically changed during the reaction. Enzymes are catalysts that work inside the cells of living ...

In the United States, about 33 million people and 1 in 13 children have food allergies, and nine foods cause 90% of reactions. These include milk, eggs, peanuts, tree nuts, wheat, soy, fish, shellfish ...

People often have an unpleasant reaction to something they have eaten and think they have a food allergy. But they may be having something else: a reaction called food intolerance. What's the ...

Photochemistry is the study of chemical processes that occur because of the absorption of light. The study of photochemical systems that use sunlight to drive important chemical reactions or to ...

Acesulfame potassium is an artificial sweetener (also known as Ace-K). Artificial sweeteners have been controversial because of possible health risks. But some of these sugar substitutes offer you a ...