We still have time...

Most are familiar with the dwindling forests of South America and the plight of many of the world's rainforests - historically the source of many of our medicinal plants. Australia is not nearly at crises point - but we should not be complacent. From the BBC

Medical plants 'face extinction' 
Hundreds of medicinal plants are at risk of extinction, threatening the discovery of future cures for disease, according to experts.
Over 50% of prescription drugs are derived from chemicals first identified in plants.
But the Botanic Gardens Conservation International said many were at risk from over-collection and deforestation.
Researchers warned the cures for things such as cancer and HIV may become "extinct before they are ever found".
The group, which represents botanic gardens across 120 countries, surveyed over 600 of its members as well as leading university experts.