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"Greatly accelerated by a heat rise,it is also stopped at the right moment,at the graphene stage. Graphene is said to be about 200 times stronger than steel, but until now has been limited for use in industrial applications as it is expensive to make.Doing so would have a significant posi- tive environmental impact,the team said,noting that adding just 0.02 percent of the flash graphene to concrete could increase its strength by 35 percent.Less concrete could be used while main- taining the same levels of structural integrity."Production of ce- ment (reportedly sends out as much as eight percent of hu- man-made carbon dioxide every year,"researchers said. 25.Why does James Tour think highly of the new process? A.It is easy to operate.