http://www.brainpickings.org/

Not that most of us need an excuse to spend any more time loitering on the Internet, but this website really is a treasure-trove. All largely run by one person as well..

'Brain Pickings is a human-powered discovery engine for interestingness, culling and curating cross-disciplinary curiosity-quenchers, and separating the signal from the noise to bring you things you didn’t know you were interested in until you are.'