Mirror writer Matt Roper went along to help with the new year animal check-up at Chessington World of Adventures when the zoo's 1,000 animals are weighed, measured, given health checks and treatments ...
The world's biggest iceberg -- three time the size of New York City -- could drift towards a remote island where a scientist warns it risks disrupting feeding for baby penguins and seals.
Then, that pixel measurement can be converted into a real-world measurement in millimeters. This allows scientists to estimate just how much energy the penguin is getting from each foraging trip.