Is It a Light Problem?

Look at this beautiful painting. It was created by the famous Dutch artist Vincent Van Gogh in 1889. In Van Gogh's time, almost everyone could look up and see a wonderful starry night sky. Now, how many of us are as lucky as Van Gogh? In fact, many people in today's world cannot enjoy a starry night sky. This is so because of light pollution. 

• because SV
  • because of N = owing to N = due to N
    • I owe you 5천원.
    • It's due on Monday.
  • The phrases "owing to N," "due to N," and "because of N" are all used to indicate the cause or reason for something. They are often used interchangeably, although there may be slight nuances in their usage.
• wonder (v.) (n.) - wonderful 
• look up the sky
  • look up at N
  • look up the word 'smart' in the dictionary
  • respect > look up on N <--> look down on N < despise 
• surname, given name >  first name, last name
• see (3), look, watch, observe 관찰하다 - observatory (n.)
  • I see you.
  • I see.
  • I will be seeing you tomorrow.
• The Three Wishes
• look at N < stare at N
• star (n.) - starry (adj.)

 Most of us are familiar with air (pollution), water (pollution), and land pollution.

• landowner, houseowner, ...
• air purifier, water purifier - purify (v.) - pure (adj.)
• is familiar with N
  • familiarity 
  • friendly (adj.)
  • family
• Most of N is/are ~
• Half of N is/are ~
• 규칙
• almost N
  • almost everyone
• most N: N
  • most people 
  • most of N
    • Most 주어
    • the most N

We know that they are serious problems, and we are taking action to solve them. But did you know that light can also cause pollution? Light pollution ― too much light in the wrong place at the wrong time ― is almost everywhere around the world. It can have serious effects on humans and wildlife. 

• have an effect on N < have effects on N
• wildlife
  • wild animals
  • wild plants
• 한 단어: in the wrong place at the wrong time
  • My brother was in the wrong place at the wrong time. 하필 그 때 그 순간에 그곳에
• almost 100%/0%
  • almost every ~
  • almost nothing 
• dash --          --
  • ,              ,
• hyphen -

According to a recent report, about 80% of the world's population lives under skies that are not dark enough at night. Especially in big cities, people often cannot see a starry night. They can also suffer from sleep problems because the natural rhythm of day and night is disturbed by artificial light.

• at night 한 단어
  • a night 정식 사용법
• day and night 한 단어 = 이름처럼 사용하는 표현
• in the sky
• 80% = 0.8 < 1
• 1 percent, 2 percent is ~
  • 2 percents <<<<<<<<<<<<<<<<<<<<<<<<< 2 percent
• approximately
• night and day

Wildlife is threatened by light pollution, too.

• Wildlife is threatened by light pollution as well.

Birds that migrate or hunt at night find their way by natural light, but light in big cities can cause them to wander off course.

• cause N to []
• cause N

Every year, millions of birds die after hitting buildings that have bright lights. Sea turtles cannot easily find a place to lay eggs since beaches are too bright at night. Also, many baby sea turtles die because artificial light draws them away from the ocean.

• The loud noise from the construction site drew away the students' attention from their studies.
• reading comprehension 뭔 말?
• ocean = sea + sea + ...
• draw N away from N
• since SV~ = because SV~
• My mom gave birth to me in 2009.
• hatch

Clearly, light pollution is as serious as other forms of pollution. We have to find ways to solve the problem. If we do not (to solve the problem), we may see stars only in our dreams or paintings.

• may [] ~일거야 = 확신
  • may see = 볼거야
  • might [] ~일지도 모른다
  • might see
• only in N, only with N, ...