Dr. John Baik with a cryocooler used in hydrogen densification.

The University of Central Florida has secured $7.4 million from NASA for another year of research into ways to use hydrogen as fuel, bringing total funding to $30.4 million. Researchers have developed a "smart paint" that changes colors when a hydrogen tank develops a leak; extracted hydrogen from landfill gas; produced hydrogen from used lube oil; and used cryogenics to densify hydrogen so smaller amounts can be used to fuel the space shuttle.

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