Opals! Photonic crystals! Structural color! Opals are examples of natural photonic crystals. They are composed of small ...

Opal Fuels (NASDAQ: OPAL) is uniquely positioned to compete strongly in this race. As a vertically integrated leader in renewable natural gas (RNG), Opal Fuels controls its supply chain from ...

Natural gas distribution company OPAL Fuels has secured an RNG supply agreement to construct five new fuelling stations in the US over a six-year period. The deal extends a decade-long ...

OPAL) today announced it has executed a long-term agreement with a market-leading provider of integrated logistics solutions to supply renewable natural gas (“RNG”) at five new fueling ...