Predicting human "phenotypes" - a person's outward traits such as hair colour or eye colour - from DNA information is a newly emerging field in forensics.
A FEW years ago Yadong Yin was experimenting with tiny beads that changed colour when a magnetic field was applied to them.
几年前殷亚东做了这样一个实验：当对微珠施加一个磁场压力时，珠子的颜色起了变化。
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For that reason, his Field of Light lies dormant during the hours of day light, but when darkness falls the bulbs flower in transfixing patterns of light and colour.