Costa Rica has set itself the ambitious target of becoming carbon-neutral by 2021. Much of the research required to ensure that this goal is met is being carried out at the Earth University. Here, students are exploring clean energy solutions as well as sustainable agriculture and waste management strategies. The country still has a long way to go.

More from this edition of Global 3000: http://www.dw.de/global-3000-the-globalization-program-2014-09-08/e-17849976-9798