Group 1 - The podcast "Knock Knock World" discusses the relationship between spending and earning, questioning why people enjoy spending money in supermarkets and tourist cities while locals may not prioritize earning [2] - Denmark's decision to raise the retirement age to 70 is seen as a response to financial pressures on the pension system, indicating a decrease in available funds [3] - Japan aims to create a "lifelong active" society, raising concerns among youth about the feasibility of working until 70 [3][4] Group 2 - The concept of "healthy life expectancy" is highlighted, noting that while average lifespans have increased, the quality of life may not have improved correspondingly [4] - The use of sterilized male mosquitoes to combat dengue fever has shown significant success in Singapore, with mosquito populations decreasing by nearly 90% and dengue infection rates dropping by 75% [5][6] - The "Venice effect" describes the negative impacts of overtourism on local communities, with Venice experiencing a tourist influx that has led to the closure of many local businesses [6][7]