Learning's biggest stories, December 18
PM2.5 pollution returned this week, with Bangkok having the third worst air quality in the world.
Prime Minister Prayut Chan-o-cha again ordered government agencies to take action.
New commemorative 100-baht banknotes were issued that could be mistaken for 1,000-baht notes.
The notes mark the Royal Coronation Ceremony of 2019, and the colour of the 100-baht and 1,000-baht notes is similar.
Bangkok commuters can enjoy free travel for a time on two new rail routes which were opened on Wednesday.
The new Green Line extension runs from Wat Phra Sri Mahathat to Khu Khot, and the Gold Line, the country's first driverless monorail, runs from Krung Thon Buri to Khlong San.
This year's New Year countdown celebrations will go ahead, the government said.
However, parties may have to be divided into small zones with a limited number of participants.
agency (noun): a government department that provides a particular service - หน่วยงานราชการ
celebration : a party or special event at which you celebrate something such as a birthday, a festival or a religious holiday - การฉลอง
ceremony (noun): a formal public event - งานพิธี
commemorative : a done in order to remember an important person or event - เป็นที่ระลึก
commuters : people who regularly travel between work and home - คนเดินทางระหว่างบ้านและที่ทำงาน
coronation : the crowning of a king or queen - วันฉัตรมงคล
driverless : without driver, having no driver -
extension : something that is added to make something longer, bigger, etc. - การยืดออก, การยืดขยาย, การเพิ่ม
mistaken : something that was done that was not correct, an error - ความผิดพลาด, ข้อผิดพลาด,ความเข้าใจผิด
monorail (noun): a railway/railroad system in which trains travel along a track consisting of a single rail, usually one placed high above the ground - รางรถไฟรางเดียว
participants (noun): people who take part in something - ผู้เข้าร่วม
PM2.5 (n): atmospheric particulate matter (PM) with a diameter of less than 2.5 micrometres, which is about 3% the diameter of a human hair. It can lodge in the lungs and enter blood vessels, leading to respiratory and cardiovascular disease -
pollution (noun): contaminated, when something has been made dirty, poisonous, unpleasant to see or smell and possibly dangerous to health - การทำให้เป็นมลพิษ, การทำให้สกปรก, ภาวะมลพิษ, สภาวะมลพิษ, มลภาวะเป็นพิษ, สภาพเป็นพิษ, ความสกปรก
quality : the standard of something when it is compared to other things like it; how good or bad something is - คุณภาพ
zone : an area that has an important or typical feature; an area where a particular activity is allowed or not allowed - พื้นที่, บริเวณ, เขต