The lines between the physical and digital world are increasingly blurred nowadays. Rapid digitalization is changing the natural environment. It is changing the way we observe, understand and interact with our ecosystem. It is also changing the actions we take on environmental issues. Computers, servers and other electronic devices require large amounts of natural resources. The energy to run them emits high amounts of CO2 and the low percentage of recycling are generating e-waste. Without denying the many benefits brought by these technologies, including for the environment, it is important for users, services providers and policy makers to understand what the impacts are and to learn how we can move greener digital technologies for sustainable development.