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Squadrons of drones should be deployed to locate and penalise farmers who let soil run off their fields, a report will say. A coalition of campaigners complains that the Environment Agency can only check soil on 0.5% of farms each year. Their report says drones can help to spot bad farming, which is said to cost more than £1.2bn a year by clogging rivers and contributing to floods. The government said it was considering the ideas for combating soil run-off The proposals come from the Angling Trust, WWF and the Rivers Trust – with support from the RSPB. Their...

A dozen black holes may lie at the centre of our galaxy, the Milky Way, researchers have said. A new analysis provides support for a decades-old prediction that “supermassive” black holes at the centres of galaxies are surrounded by many smaller ones. However, previous searches of the Milky Way’s centre, where the nearest supermassive black hole is located, have found little evidence for this. Details appear in the journal Nature. Charles Hailey from Columbia University in New York and colleagues used archival data from Nasa’s Chandra X-ray telescope to come to their conclusions. They report the discovery of a...