Trees offer ways to help achieve "negative emissions", but what does that mean for forest communities?
The 2015 Paris Agreement on climate change was a landmark the world rightly applauded. Its pledge to limit global warming to well below 2 degrees Celsius - and preferably 1.5 degrees - lays down one of humanity's greatest challenge for the 21st century. But how to achieve it?
Climate scientists say it is almost an impossible task if we only rely on reducing emissions from our power stations, transport systems and factories. Even ending deforestation will be insufficient. They say we will have to find ways of removing carbon dioxide from the atmosphere: "negative emissions" in the climate-change jargon.