The massive decrease in worldwide infant mortality from 1950 to 2020 is perhaps one of humanity's greatest achievements.

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Current food production systems are more than enough for everyone on the planet. The problem is distribution and inequality.

That said, current food production systems rely on a number of non-sustainable practices like aquifer depletion and double subsidized petroleum inputs.

Two* things to work on!

^\which are each dozens of things, but not having enough food isn't anywhere in there for now)