It is hard to imagine biodegradable plastic, but it may become true for some forms. Scientists at the University of California San Diego have discovered that the bacterium Bacillus subtilis can break down thermoplastic polyurethane (TPU), a plastic commonly found in footwear, memory foam, etc.
The genius of the discovery is that scientists can embed the spores of the bacterium (its inactive form) in the plastic itself when manufactured. It remains inactive until the plastic is disposed of in a soil-rich environment (like most landfills). It then becomes active, feeds on the TPU, and reduces its mass by 93% in only five months (compared to three to five years for most TPUs). An additional plus is that the presence of the inactive spores increased the toughness and elasticity of the TPU.
Don’s comment: It is my view that research like this is part of the stewardship expected of us by God in Genesis 1:28 – “And God blessed them; and God said to them, ‘Be fruitful and multiply, and fill the earth, and subdue it…’” (emphasis added). God embedded genius into His creation for us to discover and use for good. Such discoveries should result in praise and worship of Him (Revelation 4:11).
Source: “Plastic Eaters,” World Magazine, June 1, 2024, p. 74
