Michelle and Graeme Hamilton from South Australia are fifth-generation dairy farmers. They haven’t made any money in two years. They work fifteen hour days and not a cent to show for it. Why do they stay? Reporter Cassandra Steeth finds out.

Australia's rufous fantails have managed to avoid extinction by snake, unlike their unfortunate cousins on the island of Guam. Lindsey Nietmann is trying to find out how these 'mad fans' do it.

The migratory birds have flown about 10,000kms all the way to the arctic for food, sex and to hatch the next generation of flying machines.

The migratory birds have flown about 10,000kms all the way to the arctic for food, sex, and to hatch the next generation of flying machines.

On the shorelines of the Yellow Sea, eight million shorebirds are probing the sediment for food but their bellies are empty. Could their epic migration end right here on this barren mudflat?

On the shorelines of the Yellow Sea, eight million shorebirds are probing the sediment for food, but their bellies are empty. Could their epic migration end here on this barren mudflat?

Australia's migratory shorebirds have just flown 5,000 kilometres northward to stopover in the Yellow Sea. What will they find when they arrive?

Australia's migratory shorebirds have just flown 5,000 kilometres northward to stopover in the Yellow Sea. What will they find when they arrive?

Millions of shorebirds fly between Australasia and the Arctic every year. They navigate over oceans using stars and magnetic fields, they sleep with half their brain at a time while they're on the wing.

But for some of them, this will be the last flight.

Millions of shorebirds fly between Australasia and the Arctic every year. They navigate over oceans using stars and magnetic fields, they sleep with half their brain at a time while they're on the wing.

But for some of them, this will be the last flight.