Most people assume that a room full of daylight can only be achieved where windows and skylights have plenty of sun exposure. Not so with sunlight transport systems. Using fiber optic cables, it’s now possible to make a windowless basement feel like a glass-encased penthouse (though there’s not much cure for the concrete and cobwebs). A number of different companies are pursuing this technology, which not only offers a more pleasant quality of indoor light, but has health benefits for people who must live and work in unlit spaces, and can be paired with solar panels to make it energy-smart and fossil fuel-free. Of the ones we’ve seen, we’ve been most impressed by Parans, Sunlight Direct and Luceplan.