Championed as more efficient and energy saving, LED lights have been steadily lighting up our world.
They're in our screens, homes and supermarkets and increasingly in our outdoor environment - flashing on billboards, road signs and even car headlights.
For some people that's making life a misery.
In some countries there are even campaigns to ban blinding LEDs.
Kat McAra is one of those badly affected by LED light pollution and she talks to Jesse about what it's like.
Photo: aprior/123RF
