A new "smart skin" can change colors just like a chameleons skin, but it also fixes a major problem with other color-changing materials—the way they shrink.

A new Rubik's Cube-like structure made of a self-healing hydrogel might one day lead to new ways to store data and monitor medical conditions.

Microparticles can monitor oxygen levels in hydrogels that one day could be used to regrow muscle, cartilage, or organs.

A new way to harvest water uses a hydrogel to collect moisture from humid air and then release it with sunlight.

Bone infections after surgery can be hard to treat and delay healing. A new hydrogel attacks bacteria and encourages regrowth with a single application.

A new kind of injectable hydrogel scaffold could help repair bone, cartilage, and other tissues able to regenerate themselves.

A new class of hydrogel bio-inks consists of 2D mineral nanoparticles to sequester and 3D print therapeutics at precise locations.

A study in rats shows that a hydrogel-based patch can help muscle heal after a heart attack and prevent more damage.

A new kind of hydrogel material can react dynamically to its environment—bending, twisting and self-adhering on demand.

The durable new material, which can change from stiff to soft, could be useful in medicine or to help repel oil build-up on surfaces.