In a French criminal trial, conventional DNA analysis couldn’t distinguish between twin brothers, but emerging scientific methods could help in such cases.

1 The Swedish School of Sport and Health Sciences, Stockholm, Sweden 2 The Section of Orthopaedics and Sports Medicine, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, ...

This calculation can be used for hypothesis testing in statistics Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive ...

This story appears in the January 2012 issue of National Geographic magazine. Every summer, on the first weekend in August, thousands of twins converge on Twinsburg, Ohio, a small town southeast of ...