There's mounting evidence that increased lighting has a range of negative effects.
A strong case for telling children to go outside and play.
Diatoms' tricks may offer new insights that keep solar cell energy running efficiently and robustly throughout their processes.
Individual light-harvesting protein complexes have a remarkable ability. Light, which is normally effectively harvested, is also used to finely control how much of it should be harvested.
Orkney's ultra-high incidence has been linked to the weak northern sun. So how come the more northern Shetlands are less afflicted?
SAD has entered popular mythology, but that doesn't make it real.