By CBC Radio

When David Milarch first learned about ancient coast redwood stumps hidden in California, he says he was "the most thunderstruck" he'd ever been. At about 10 metres in diameter, he'd never heard of any tree growing that big. Now the non-profit that Milarch co-founded is using genetic information from five massive tree stumps to help in the fight against climate change.

On Dec. 14, the Archangel Ancient Tree Archive planted 75 coast redwood saplings at Presidio, a park in San Francisco, that are exact clones of those stumps.

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By Alice Shen

Research shows greater diversity leads to more greenhouse gas absorption

Forests with a diverse mix of trees can absorb more than twice as much carbon as areas with just a single species, research carried out in eastern China has found – a discovery that could help in the fight against climate change.

Planting forests and other activities that harness the power of nature could play a major role in limiting global warming under the 2015 Paris agreement, an international study showed on Monday.

Natural climate solutions, also including protection of carbon-storing peatlands and better management of soils and grasslands, could account for 37% of all actions needed by 2030 under the 195-nation Paris plan, it said.

Combined, the suggested “regreening of the planet” would be equivalent to halting all burning of oil worldwide, it said.