ABC 5050 quiz: A July 4 special with an alien invasion, George III on TV and Taylor Swift

Each question in the ABC 50/50 quiz has only two options: one is right; the other is wrong. But there's a catch.

South Africa, in the mid-1800s, planted millions of Australian acacias as a dune fix; 180 years later, that decision is costing the country its rivers and ecosystem

A study reveals how the introduction of Australian acacias in the mid-1800s to stabilize dunes has resulted in significant ...