The powdery lignin, once separated from the cellulose, is a very useful substance in its own right.

FORBES: Ethanol

With little more than a handful of wells in Texas, Calibre is still a very useful vehicle to its backers.

FORBES: Magazine Article

Nonetheless, Rems is returning very useful meteorological data, and scientists are learning to work around its deficiencies.

BBC: Dust-devils flirt with Curiosity Mars rover