But Craig and Grahn built a few more versions of this cooling mitten and handed them out.
但克雷格和格拉恩制造了几个版本的这种降温手套,并将其派发出去。
科学60秒-科学美国人 2023年6月合集
To see if they could take advantage of AVAs in people, back in the early 2000s Craig and his colleague Dennis Grahn basically McGuyver'd this goofy device.
For instance, a study, done by Jessica Grahn, a Canadian cognitive scientist, showed that a year of piano lessons, combined with regular practice, could increase IQ by as much as three points.