On 26 September 2019, the streets of Geneva went completely ______.

• bright

• cold

• dark

• loud

Light pollution happens when light from ______ or buildings makes the night less dark.

• streetlamps

• computers

• phones

• cars

Light pollution is a problem because it affects both animals and ______.

• technology

• food

• people

• music

Birds flying to warmer countries use the ______ and stars to find their way.

• sun

• moon

• clouds

• wind

Insects and birds often fly towards lights at night and ______ into buildings.

• slide

• run

• crash

• jump

Light pollution can stop us from ______ properly at night.

• running

• breathing

• sleeping

• eating

Many people today have never seen the millions of stars in our ______, the Milky Way.

• planet

• solar system

• universe

• galaxy

Hundreds of thousands of people have never seen the ______ of the night sky.

• sounds

• lights

• beauty

• darkness

One solution to reduce light pollution is to turn off lights when we don’t ______ them.

• need

• like

• see

• avoid

Light pollution can also cause ______ and discomfort in people.

• happiness

• headaches

• excitement

• tiredness