1) The Amazon rainforest produces more than 20% of the world's oxygen.

2) The Black Lives Matter movement gained renewed momentum in 2020 following the killings of George Floyd, Breonna Taylor, and others, sparking protests and discussions on systemic racism, police reform, and social justice around the world.

3) Insurance premiums are the payments made by policyholders to insurance companies in exchange for coverage.

4) The longest-running TV show in history is "The Simpsons," which has been on the air since 1989 and has over 700 episodes.