HealthChromosome caps presage the brain's decline The length of telomeres – stretches of DNA that get shorter as cells divide – may predict a decline in our cognitive abilities as we age ¿ìè¶ÌÊÓÆµ
Unreliable evidence? Time to open up DNA databases Forensic scientists and lawyers want the US to open up its genetic database so they can test the way suspects are matched with crime-scene DNA samples ¿ìè¶ÌÊÓÆµ