Blue light can actually help older adults sleep — but only if they’re exposed at the right time of day
Blue light often gets a bad rap, probably because most of what we know about it is that it wreaks havoc on our sleep. But new ...
National Geographic news3y
A long night in Arctic exploration
They towered over me at roughly 6 meters (19.5 feet) high, covered in long, frosted icicles ... There was already no distance between me and the ice. Light pierces the ancient blue ice of a ...