Planting billions of trees across the world is by far the cheapest and most effective way to tackle the climate crisis, according to scientists, who have made the first calculation of how many more trees could be planted without encroaching on crop land or urban areas.

As trees grow, they absorb and store the carbon dioxide emissions that are driving global warming. New research estimates that a worldwide planting programme could remove two-thirds of all the emissions that have been pumped into the atmosphere by human activities, a figure the scientists describe as mind-blowing. 

“This new quantitative evaluation shows [forest] restoration isn’t just one of our climate change solutions, it is overwhelmingly the top one,” said Prof Tom Crowther at the Swiss university ETH Zürich, who led the research. 

“What blows my mind is the scale. I thought restoration would be in the top 10, but it is overwhelmingly more powerful than all of the other climate change solutions proposed.”

Even the most learned people in climate science now accept the only way to halt, and potentially reverse, global warming is direct absorption of Co2 gases from the atmosphere. 

The most practical way of doing this in any scale is through trees, natures AIR cleaner.


  • Tropical Hardwoods are a better natural store of Carbon compared to Softwoods found in Europe, North America and Russia.
  • Higher timber density and carbon content is one primary reason.
  • Absorption rates are also higher for a tropical wood given practically year-round growth in the Tropics versus only 3-4 months of active growth in the Northern climate.