Walker Swamp: The mission to restore an Australian wetland
Walker Swamp had been destroyed by 150 years of farming - now it is replenished and welcoming life.
Author Archives: BBC News - Science & Environment
Australia: Oldest rock art is 17,300-year-old kangaroo
Scientists determined the painting's age by examining ancient wasp nests around the artwork.
Extinction: Freshwater fish in ‘catastrophic’ decline
Numbers are plunging due to pollution, unsustainable fishing and the draining of rivers.