Amino acids link together to form a protein when the amine group on one reacts with the acid group on the next.

ECONOMIST: Folding stuff

These are an amine group, an acid group (hence the name), a hydrogen atom, and a fourth chemical group that can be any one of 20 different clusters of atoms.

ECONOMIST: Folding stuff

Results suggested that after three months, the group using the fatty acid made "highly significant improvements" in 12 out of 13 behavioural scales, including three diagnostic ADHD features - inattention, hyperactivity and impulsivity.

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The group also found that folic acid, a vitamin known to help reduce the chances of birth defects, did not decrease that risk among heavier women.

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The group was also accused of carrying out an acid attack on two women in Kashmir's summer capital Srinagar for defying its Islamic dress code.

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