1) The COVID-19 pandemic has highlighted the importance of global collaboration and solidarity in addressing public health emergencies, with efforts focused on vaccine sharing, equitable distribution, and support for developing countries.

2) The process of nuclear fusion powers the sun and other stars, fusing hydrogen atoms together to form helium and releasing vast amounts of energy in the process.

3) The Great Wall of China is not visible from space without aid, contrary to popular belief.

4) The International Monetary Fund (IMF) and the World Bank are international financial institutions that work to promote global financial stability and economic development.