Daisy Gilardini: Through her images of polar bears, seals and penguins, Daisy Gilardini has become one of the best-known photographers of wildlife in Antarctica and the Arctic. Keith Wilson hears why she believes photography is vital to saving the creatures that she loves

Say 'Switzerland' and most people think of banks, cuckoo clocks, chocolate and Roger Federer. These might be cliche images of the small alpine country, but when it comes to the [...]