UNESCO has recently launched WLoS (World Library of Science), a free online resource for science learning.
“It contains hundreds of peer-reviewed articles that use text, pictures, illustrations, and videos to make scientific concepts easy-to-understand. The WLoS is also a community hub for learning. Users can join classes, start groups and connect with other learners”.
The resources offered are high-quality educational material, peer-reviewed and multimedia.
“The WLoS is more than just a traditional library: it is a dynamic resource that allows users to collaborate with others, personalize their learning experience, pose and answer questions, and collaborate with others while exploring scientific concepts. The WLoS fosters knowledge-sharing and peer-learning”.
Find it here: http://www.nature.com/wls