https://nexusmedianews.com/imagine-a-cell-phone-that-regrows-its-screen-f91e01f1d23b

Carbon-fixing materials — substances powered by the sun that use atmospheric carbon dioxide to grow and repair themselves, just as plants do — don’t yet exist outside the lab. But scientists are getting tantalizingly close to making them a commercial reality.

When they become available, they likely initially will enjoy widespread use as “self-healing” coatings, such as in car trims, cells phones and fabrics. When their surfaces become cracked or scratched, they will easily be able to fill in the gaps with exposure to air and sunlight, without requiring additional action. Also, transporting them will be more cost and energy efficient, as they could first be shipped to manufacturers and builders in a lightweight size. Once at their destination, they would then be exposed to air and sunlight, where they would expand, solidify and harden.