November 24, 2016

How to take pictures of exoplanets

IN THE quarter of a century since the first extrasolar planets were discovered, astronomers have turned up more than 3,500 others. They are a diverse bunch. […]
November 22, 2016

Fijian ants grow their own homes

HUMANS began planting crops about 10,000 years ago. Ants have been at it rather longer. Leafcutters, the best known myrmicine agriculturalists, belong to a line of […]
November 17, 2016

Where’s the catch?

ABOUT 90% of the world’s fish stocks are being fished either to their limit or beyond it. Monitoring fish numbers reliably, though, is no easy matter. […]
November 17, 2016

Magnetic moments

A CLASSIC experiment beloved of scientifically inclined children is to cover a magnet with a piece of paper and sprinkle iron filings onto the paper. This […]