Conflicting evidence means it's tough to tell whether trees helping to clear the air, or if green is not as good as we thought.
Mangroves put their roots down where few other plants will.
Mangroves - one of the most important trees - are threatened by rising seas. While these forests can adapt, human development is getting in the way.
Ghost gums: dieback on Jindabyne Road.
Tim the Yowie Man
2,000 square km of forest have dropped dead in New South Wales, indicating big changes to the environment.
‘I don’t do public transport.’
Bat populations have been hammered by deforestation. Efforts like tree-planting schemes are a step forward, but they're doomed to fail unless we apply a bit more local knowledge.
A baobab in Tete Province, Mozambique.
Why are African baobab trees found in India? Genetic research is starting to shed light on the answer.
Eucalyptus trees in plantations are particularly vulnerable to pests.
Invasive pests threaten the world's much-needed planted forests, as trees are declining.
Forests are vital to life on earth.
Forest image from www.shutterstock.com
Forest loss has halved over the past 30 years according to the 2015 Global Forest Resources Assessment, released yesterday.
Satellites weren’t enough to get a global number.
Sophisticated models and supercomputers allow researchers to create a high-fidelity map of the Earth's trees – and show that we’re losing billions of trees a year.
There are a lot of trees on Earth. But there used to be many, many more.
There are more than three trillion trees worldwide, but that's only half as many were around at the start of human civilisation according to new research.
Each year more than 15 billion trees are lost worldwide, according to a major new study.
One more California wildfire from last year: getting more dangerous and more expensive.
The US West – suffering one of the most damaging wildfire seasons this decade – needs to break with current practices to avert more costly and dangerous wildfires in the future.
Trees remove carbon dioxide naturally: can we do better?
Coconino National Forest
Like it or not we are going to have to figure out how to suck lots of carbon out of the atmosphere.
High and dry: a water-stressed forest in the US Southwest.
Forests take longer than expected to rebound from droughts, diminishing their role as global carbon sinks.
Melburnians love their trees, and for good reason.
The fact that we have embraced the notion of emailing a tree is no surprise. We have been passionate about trees in cities for a long time.
The Separation Tree in the Royal Botanic Gardens, Melbourne, marking where Victoria’s separation from New South Wales was celebrated in 1850, is dead after two attacks by vandals.
Tree vandals after better sea views or with political goals deprive everyone of the benefits trees provide. Despite costing local councils thousands in replacement trees, they are rarely caught.
The last tree standing.
These relics of Britain's ancient woodland are still going strong.
Legend tells that huge hollow boabs were used as prisons in north west Australia.
Genetics and linguistics show Aboriginal people spread iconic boab trees around north west Australia.
They might look static, but trees are dynamic living things - just on a different time scale to us.
Michael MK Khor/Flickr
Trees are more like us than you might think. They even have a pulse. They just operate over much slower timescales.
In the 1920s and 1930s crews surveyed much of California, collecting information about vegetation. This photo was taken in 1936 by Albert Wieslander.
Marian Koshland Biosciences Library
Scientists in my native state of California were handed a gift: a trove of detailed information about the state’s forests taken during the 1920s and 1930s and digitized over the past 15 years. When we…
The inner suburbs of Melbourne are surprisingly more leafy than the outer suburbs.
When you look out of your window in the morning, how many trees do you see? Your answer might depend on what suburb you live in. As you go further from the city centre, the amount of tree cover in a suburb…