Inside Health

When populations fall, fledglings can struggle to learn the right notes to attract mates. But research on how birds communicate offers hope for species’ survival Listening to birdsong is one of life’s great joys, but when researchers heard a particular tune emerging from a tree in a Buenos Aires park, they were especially jubilant. This arrangement was among those chirped by the local rufous-collared sparrows in the 1960s, but had since disappeared from the area. That was until scientists create

A group of clinicians warns technology use in English schools is driving a rise in health problems like short-sightedness.

We have arguably already discovered dark matter, says columnist Chanda Prescod-Weinstein. To observe it, we will need to figure out whether we expect it to act like a particle or a wave.