The pups are cute - and great for PR - but they're modified grey wolves. The real work is being done with their red cousins, says science writer Helen Pilcher ...
In the second of a two part series, Phoebe Weston travels to Switzerland to find out how the country has transformed its rivers, from sewage-filled health hazards to pristine swimming spots. She tells Madeleine Finlay how a public health disaster in ...