Marjolein Helder's ambition is to provide the world with green energy.
After her PhD ceremony last Friday, she presented a fun gadget developed by her company, Plant-e. A globe that is turned by energy generated by a living plant. Helder spent four years researching ways of generating energy from living plants, and of upscaling the process for large-scale applications. Her gadget has now attracted the attention of the BBC, CNN and Reuters. The Plant-e Planet will be on sale from 1 December at plant-e.com.