When Ethiopia got organised and planted 350 million trees in one day. We’re sharing five days of the best things that happened in 2019. Here’s our third instalment. Research shows a trillion trees could be planted to capture a huge amount of carbon dioxide. Damian Carrington, writing in the Guardian reports on new research which shows the planting of a trillion trees will have 'mind-blowing potential' to tackle climate crisis - and it seems this miracle solution could be viable even without political support.