Heliconius butterflies eat high-protein pollen and seem to age well.

Schools can teach Welsh, but can they create lifelong speakers? New research suggests the answer is more complicated than policy assumes.

AI translation can be fast, convenient and fluent. But that does not guarantee people will understand each other.

Research shows that market-based land reform in South Africa since 1994 has often benefited white farmers and preserved inequality instead of reducing it.