Letters to the Editor

Readers ask about Saturn’s icy rings, transparent fish and more

Readers discuss a subglacial cavern, how language shapes the brain and more

Readers ask about AI ethics, monkey tool use and more

Readers react to Neandertal diets and impressionist art

Readers react to a dwarf planet’s odd ring, dry farming and more

Readers ask about Earth’s inner core, plant movement and more

Readers ask about bird droppings, Ice Age cave art and more

Readers discuss net-zero carbon emissions and glass frogs

Readers ask about fungal lung infections

Readers ask about sea level rise, the universe’s first stars and more

Readers discuss jazz music, the next generation of astronauts and more

Readers discuss swimming sperm, a fishing fox and more