Wollemi pines once covered prehistoric Australia.
Wollemi pines have survived for hundreds of millions of years. Once covering Australia, they now survive in a few isolated spots – but they're coming back in a big way.
An ancient giant.
Despite them living for up to 2,500 years, researchers have discovered several baobab trees in Africa have died. Aida Cuni Sanchez on why these trees have a special place in our world.
The Bunya pine is a unique and majestic Australian tree that commands respect.
Enviva’s wood pellet plant in Ahoskie, NC.
Deriving fuel from trees costs more than wind and solar power and it emits more carbon than coal. There are many heated debates about this kind of energy, known as forest or woody biomass.
For a megacity, Tokyo is rich in trees.
In an increasingly urban world, trees can make a major difference. One study found that, for every dollar invested in planting, megacities saw a $2.50 return on their investment.
Different kinds of plants make different kinds of seeds. Some seeds grow into trees and other seeds grow into other kinds of plants.
Trees evolved many times around the world.
Europe loses as many trees to storms each year as Poland produces in timber. Until now, the models for predicting which trees are at risk have not been good enough.
Bridge built by CCC workers, Shady Lake Recreation Area, Arkansas.
On April 5, 1933, President Franklin Roosevelt created the Civilian Conservation Corps, a massive relief program that paid young men to plant trees and build parks across the nation. It was money well spent.
City trees don’t just look after themselves.
Tree bonds are set to be introduced by a Melbourne city council to protect city trees. But how do they work and why are they needed?
The history of the rubber 'boom' reveals why.
It’s as if Socrates’ remark that 'the trees teach me nothing' is very much still the attitude today.
Calamophyton Forest colour copy.
Cladoxylopsid trees were hugely complex and very different to those we have now.
The Greening the Pipeline 100-metre pilot park at Williams Landing is the first step in transforming 27 kilometres of the heritage-listed main outfall sewer into a linear park and bike track.
Greening the Pipeline, courtesy of Melbourne Water
Tree plantings are making a visible difference to Melbourne’s west. It's the result of a collaborative model of greening, one that Australian cities need to apply more widely.
Guam’s trees are struggling without the birds that spread their seeds.
Guam's trees are in trouble, thanks to the accidental release of a snake species 70 years ago, which has killed off many of the bird species that are vital for the health of the island's forests.
Tongass National Forest, Alaska.
Can forests effectively remove carbon from the atmosphere?
Once the coat around the seed is moistened, the embryo cells expand and burst out in a process called germination.
A seed contains nearly everything a tree needs to get growing. Just add a dash of water, a bit of warmth and the right location, and you'll be seeing green in no time.
Hundreds of large old trees were removed when the Hume Highway was widened.
When the Hume Highway was widened, hundreds of nest boxes were installed to replace habitat for three threatened species. Four years of monitoring has concluded the program is entirely unsuccessful.
Larvae of longhorn beetle feeding on pine stump.
It's thanks to decomposition brought about by beetles and fungi that we're not all buried under dead organic matter.
Wollemia pine pollen cone. Wollemia pines (found in the wild only in Australia) are one of the most ancient tree species in the world, dating back 200 million years.
Australia is home to some of the oldest trees in the world. But how do they live so long?
Mangroves have died along a 1,000km stretch of coastline in the Gulf of Carpentaria.
In early 2016 reports appeared that vast swathes of mangroves had died in the Gulf of Carpentaria. It now appears heat and drought were to blame.