Females have twice as many copies of some genes as males do – and exactly how different species manage this imbalance has puzzled scientists for decades.

Our bodies have a dedicated channel for sensing only the very lightest of touches.

Tracing isotopes of carbon inside amino acid molecules has revealed the ‘metabolic fingerprints’ of how different animals store and use energy.

Stem cells could help regenerate diseased or damaged parts of the body – but first, scientists need to make the cells forget their own histories.