Apart from their functional purpose, products can also impact how we feel, both about ourselves and our situation.
Marvel villain Thanos wiped out half the universe's population to create paradise. But as the Avengers find out in Endgame, solving resource scarcity is not that simple.
To tackle global rising obesity rates, we need to focus on food insecurity.
Climate change imperils food supply in many parts of the world, including South Africa, which has shown major gains in treating HIV/AIDS. Climate change could mean even less food -- and more disease.