Too much outdoor lighting is a problem in many cities nowadays. What are the causes and negative impacts of light pollution in cities? - at least 250 words. - spend around 40 minutes.

Since the 18th century's Industrial Revolution, people started to work at

night

. Undoubtedly, Lighting devices made a great contribution to the evolution of human beings.

However

, lighting up too much at

night

can become a form of disaster.

This

article will outline the causes of

light

pollution and how it is going to impact our environment negatively.

According to

a recent study in England, there are two kinds of sources that causes

light

pollution. One of them is festivals. Take Christmas as an example, department stores will hang lighting bulbs on street trees and use these

lights

to create a festive atmosphere to attract more customers.

Nevertheless

, it is an act that pollutes the city with

lights

. Another one is advertising. Local stores and shops often use eye-catching banners with LEDs decorated on them. Most of them are just giving out a huge amount of

light

strays at

night

.

Light

pollution can be detrimental to our environment.

Firstly

, insects that use

lights

to reproduce and attract female insects are impacted severely. Without being in darkness, the

lights

the male insects produce to attract female ones could not be seen. Those kinds of species are decreased dramatically in cities.

Secondly

, birds that live in dark require only a few

lights

to hunt and can be failed

due to

too many

lights

on.

As a result

, these birds might go extinct in the near future. In conclusion, human activities that provide too much

light

can eventually hurt our environment. It’s our duty to take care of our earth and cut down unnecessary

lights

at

night

.