Open Educational Resources: are teaching, learning, and research materials intentionally created and licensed to be free for the end user to own, share, and in most cases, modify.
Green Infrastructure: is a network of natural areas, working landscapes, and other open spaces that preserve ecosystem values and functions while also providing benefits to human populations.
Green Procurement: is a programme that encourages the purchase of environmentally preferable products and services.
Virtual Reality (VR): is a simulated experience that employs pose tracking and 3D near-eye displays to give the user an immersive feel of a virtual world. Applications of virtual reality include entertainment (particularly video games), education (such as medical or military training) and business (such as virtual meetings).