Boston, Massachusetts — Creatures that thrive on iron, sulfur, and other chemicals have been found trapped inside giant crystals deep in a Mexican cave. The microbial life-forms are most likely new to ...

Liquid crystals are substances that flow like a liquid but maintain some of the ordered structure of crystals. Liquid-crystal molecules tend to be elongated and to orient in specific directions.

Photonic crystals are periodic optical structures that can control the flow of light. Multiple reflections from surfaces separated by a distance similar to the wavelength prevent an optical beam from ...

An infection can slow down the healing process of a wound. Poor blood circulation hampers wound healing because it limits oxygen supply. People who smoke may experience slower wound healing due to ...

Itching means your skin is healing because your body is repairing tissue. Don't scratch your wound; it can slow healing and risk infection. Use ice packs, anti-itch creams, and moisturizers to ease ...