Describe a 21st-century societal problem that has been solved by modern-day technology/way of thinking and or government policy related to S & T. The societal problem may be in the following...

Describe a 21st-century societal problem that has been solved by modern-day technology/way of thinking and or government policy related to S & T. The societal problem may be in the following fields: the economy, agriculture, political science, education, medicine, infrastructure, communication, transportation, etc. Give 5 innovations or examples and explain.