Carving up ecosystems or opening them to development puts the survival of species at risk.
Ever feel so stressed you can't carry on? You're not alone - koalas have a similar problem, and hundreds are being rescued by veterinarians each year.
The outgoing Threatened Species Commissioner has downplayed the importance of land clearing as a threat to Australia's plants and animals. But it's the biggest threat, and magnifies the others too.
Animals and plants will need escape hatches to move to cooler climes as the planet warms, but few parts of the U.S. have the natural habitat available for these migrations.