• As many cities around the world become greener with plant-clad towers, vertical gardens and tree-filled urban developments, ​​a recent study has revealed that during heat waves, trees in a city can actually contribute to higher levels of air pollution.
  • In the fight to cut greenhouse gas emissions, we tend to think of trees as our allies, but new research suggests they might not be as "green" as we think. Researchers have found that some types of trees emit methane through their trunks, partly countering their role as a greenhouse gas sink.
  • Science
    ​If you work in the forestry industry, then you'd better know that you're cutting down the right type of trees. With this is mind, Finnish researchers have created a new laser-based tree classification system.
  • When pine trees are harvested, the needles are simply discarded. Before too long, however, that may change. Scientists have recently developed a renewable plastic, made with a chemical derived from pine needles.
  • ​​For almost a decade, scientist Todd Dawson has studied the giant sequoia trees of California's Whitaker Forest. But as the region suffers through a record-breaking drought, Dawson and his team are now getting some much needed help, by way of sensor-equipped drones
  • Planting trees in remote forest locations is a slow, laborious process that still relies on humans with shovels to do all the work. DroneSeed wants to drastically modernize that process by employing squadrons of drones to plant seeds, spray for invasive species, and monitor the tree growth process.
  • A newly-opened treetop walkway in the UK is said to be the longest in the country. The 300-m (984-ft) path at Westonbirt Arboretum takes visitors into the tree canopy, providing a perspective that would otherwise not be possible, along with views out across the surrounding landscape.
  • Timber furniture is made from a tree that has been cut down, sawed up, and stuck back together again. Wouldn't it make more sense to grow a tree straight into a piece of furniture? Gavin Munro thought so, now he grows all sorts of furniture straight out of the ground.
  • Science
    Researchers have used data collected by the Carnegie Airborne Observatory to uncover chemical variation in plant life across the lowland Peruvian Amazon. The study provides key information for understanding the rainforest, and assessing our future impact on it.
  • Trees may be a renewable resource, but the rate of this renewal may not meet the increasing demand for plant biomass. But now researchers at the University of Manchester have potentially found a way to boost tree stocks by using gene manipulation to increase the size and growth rate of trees.
  • The olfactory experience that accompanies a real Christmas tree comes at the cost of a floor covered in pine needles as the tree inevitably loses its grip on life. Now a group of Australian schoolgirls has discovered an easy way to prolong the life of the tinsel- and ornament-covered tree.
  • Unfortunately, money doesn't grow on trees. Wi-Fi and electricity, on the other hand, sometimes do. The eTree, created by Israeli renewables firm Sologic, is a public space intervention aimed at provide a place to rest, connect to the internet and recharge devices.