In most churches, the decorations are red to symbolize the blood of martyrdom. Some churches remove all decorations on Good Friday, veiling anything that can’t be removed in black or purple. Holy ...

Protein design (or protein engineering) is a technique by which proteins with enhanced or novel functional properties are created. Proteins can be engineered by rational design, which typically uses ...

Body language is a silent orchestra, as people constantly give clues to what they’re thinking and feeling. Non-verbal messages including body movements, facial expressions, vocal tone and volume, and ...