Thirty tree species make up more than half of Australia's urban forests. Some won't survive climate change, so cities must plant a more diverse mix of the right species to preserve their tree cover.
Climate extremes are killing Australian trees, but we don't know where they're dying. Scientists are asking the public to use their phones to help.
How a species of screw pine unique to Lord Howe Island has evolved its own rainwater harvesting system that allows it to grow tall.
A pathogen is killing kauri trees in New Zealand and now threatens an ancient, sacred giant. The response to the biosecurity incursion pales in comparison to recent threats to agricultural crops.