useful

La Liga refuted the accusations, external earlier this week, stating a "willingness to meet" with the AFE to "foster useful dialogue that allows explaining the project".

Now, the cast of villains has only grown more diverse as the technology has gone from being scientifically interesting to economically useful.

"For centuries, humans have improved materials by altering their chemistry. Our work builds on the field of metamaterials, where it is geometry -- rather than chemistry -- that gives rise to unusual and useful properties," Mao said.

We can continue as useful idiots, decrying “China hawks” who point out that we’re funding our own demise.

The trio were also convicted of collecting information likely to be useful to a person preparing or committing an act of terrorism, while Ringrose was found guilty of manufacturing a prohibited weapon.