The United Nations predicts Earth will have to feed another 2.3 billion people by 2050.
Controlled environment agriculture (CEA) combines plant science and environmental control to optimize plant growth and maximize efficiency.

Astrobiology
Charting the Cosmos: the Concept of Kardashev Civilizations
As we gaze upon the universe, contemplating our place in its vast expanse, we grapple with questions about our future.