The slimy science behind these molluscs’ movements

Whether mutually beneficial or a parasitic nuisance, Nature’s symbiotic relationships are as multifarious as they are marvellous, says John Lewis-Stempel

When she died in 2024, Spain’s Maria Branyas was the world’s oldest woman. She was 117. Experts believe the secret to her longevity may have been the bacteria living in her gut – her microbiome – and

Amazing answers to your curious questions

Squinting, it looks like a piece of popcorn. It’s hard to imagine this tiny orb could be a lifeline for coral reefs around the world. “That will have maybe eight or 12 eggs,” says Dr Jamie Craggs as I

Beneath the vast Arctic and Antarctic ice sheets, there’s a weird world unlike any other