A new analysis of the chemical make-up of meteorites has helped scientists work out when the Earth formed its layers.

Preventing Australia's biodiversity from collapsing needs long-term science-based programs that are more complex than just culling cats and foxes, says leading environmental scientist Professor David Lindenmayer.

You might have seen recently that swift parrots – little green parrots that migrate between mainland south east Australia and Tasmania – are headed for extinction.

Researchers from The Australian National University (ANU) are calling for the public to help protect three species of critically endangered birds.