Explanation:

Half of the population living in poverty in Bangladesh:
- Bangladesh is a country in South Asia where half of the population lives in poverty.
- Poverty in Bangladesh is a widespread issue that affects a large portion of the population.
- Factors such as overpopulation, natural disasters, political instability, and lack of access to resources contribute to the high poverty rate in the country.
- The poverty line in Bangladesh is defined as living on less than $1.90 per day, which is the international standard set by the World Bank.

Causes of poverty in Bangladesh:
- Limited access to education and healthcare services.
- Lack of job opportunities and low wages.
- Poor infrastructure and inadequate public services.
- High levels of corruption and political instability.

Efforts to reduce poverty:
- The government of Bangladesh has implemented various poverty alleviation programs such as microfinance initiatives, job creation schemes, and social safety nets.
- Non-governmental organizations (NGOs) also play a crucial role in providing support to the impoverished population through programs focused on education, healthcare, and livelihood development.

Conclusion:
Despite efforts to reduce poverty in Bangladesh, the country still faces significant challenges in addressing this issue. It is essential for the government, NGOs, and international partners to work together to implement sustainable solutions that can lift people out of poverty and improve their quality of life.