Squirrels, platypuses, and gophers are all furry mammals that are most active at dawn, dusk, or in the dark. A series of surprising studies have shown that these animals share another, less obvious trait: they all glow when exposed to ultraviolet…
Squirrels, platypuses, and gophers are all furry mammals that are most active at dawn, dusk, or in the dark. A series of surprising studies have shown that these animals share another, less obvious trait: they all glow when exposed to ultraviolet…