Scientists have produced the most tightly knotted physical structure ever known -- an achievement which has the potential to create a new generation of advanced materials.
The transparent, self-healing, and highly stretchable conductive material can be activated to power artificial muscles and improve batteries, electronics, and robots.
Naturally formed quasicrystals--crystal-like solids with supposedly impossible symmetries--are among the rarest structures on Earth. Only two have ever been found.