https://tw.stock.yahoo.com/news/全球人才戰升級-趁川普趕留學生-日本砸1000億日元要接收逾百位科研人員-034002509.html
https://youtu.be/XlnWZQQPARw?si=CU3hCvq9GWaPF8DN
https://youtube.com/shorts/div9WFCwVuc?si=2or4EhDwGz9ZrKh5
https://youtu.be/0w7DTTyCH7s?si=i1JFTF0H-o8WXy2g
https://youtu.be/LTYMWadOW7c?si=2eWoaGSOcc5eIaiV
https://www.youtube.com/watch?v=N72L2jcuosU&t=586s
https://www.youtube.com/watch?v=_oa2L1oCX4Q
🔖請參考課本 pp. 183-187

Negative Externalities

Positive Externalities
Source: Mankiw, N. G. (2015). Principles of economics (7 ed.). Cengage Learning.