“My original pitch was to plant a billion trees a year, but people said to me, can you do 100 billion? We need those kinds of numbers. But I’m optimistic it’s doable.”

One of the most practical ways to combat climate change is planting trees. But experts estimate that 15 billion are cut down every year – and even with trees being replaced, there’s still an annual deficit of 7-10 billion trees.

Lauren Fletcher, a former NASA engineer, knew the only way to turn the tide of deforestation was to plant trees more quickly. And so he founded Biocarbon Engineering, a company dedicated to developing drones that can fire tree saplings into the ground at a staggering rate of two per second.

With global co-ordination, a vast range of species can be planted around the world ensuring diverse eco-systems grow simultaneously and harmoniously.

Photography by Ken Hermann