**Columbia University Engineers Artificial Trees That Capture 1 Ton of CO₂ Daily, Marking Breakthrough in Climate Technology**
Columbia University scientists have developed artificial trees that can remove up to one ton of carbon dioxide (CO₂) from the air daily—around a thousand times faster than natural trees. These innovative devices hold significant promise for global efforts to combat climate change, offering a flexible and scalable carbon removal tool that requires no external power source.
The artificial trees use specially engineered, resin-infused plastic leaves coated to passively absorb CO₂ from the surrounding air. As air flows over the surface, CO₂ molecules bind to the resin and are then converted into bicarbonate. Once the leaves reach their saturation point, a simple rinse with water releases the captured carbon, effectively “recharging” the device for repeated use. Each unit can extract as much CO₂ as is produced by about 36 cars in a single day.
Unlike their biological counterparts, these artificial trees do not produce oxygen or provide shade, nor do they contribute to local ecosystems. However, their unparalleled efficiency in carbon removal has drawn considerable attention from climate scientists and policymakers. The technology, pioneered by Professor Klaus Lackner and his team at Columbia’s Earth Institute, has undergone significant improvements since early prototypes demonstrated similar carbon-capture capabilities more than a decade ago. Advances in resin technology have now made it possible to achieve CO₂ capture rates thousands of times greater than that of a natural leaf.
Looking forward, experts say that scaling up the deployment of these artificial trees could greatly enhance current global strategies for atmospheric carbon management. If millions of such units are deployed, they could significantly reduce CO₂ levels, complementing existing measures such as emission reductions and renewable energy adoption. Despite these promising prospects, researchers highlight key challenges remaining: costs need to be reduced, workable solutions for CO₂ storage or utilization must be developed, and the devices must be effectively integrated within wider emission-reduction frameworks.
While the absence of oxygen generation and ecosystem benefits sets these artificial trees apart from real ones, their versatility offers a major advantage. They can be placed virtually anywhere, unconstrained by proximity to industrial sources or land requirements, making them a practical addition to the technological arsenal against climate change.
