New scientist dating service
In dating sites, science-based online dating sites are those pair-matching websites that claim to use “science”, such as chemistry, genetics, psychology, or the scientific method, etc., to match up potential couples.
In the mid 1970s, MHC-dissimilar tendency matching was shown to be the case for mice (and later for other animals such as fish) and in 1995 Swiss biologist Claus Wedekind, creator of the sweat T-shirt study, proved that the pattern holds for humans.
 In this study, Wedekind had a group of female college students smell T-shirts that had been worn by male students for three nights, without deodorant, cologne or scented soaps.
Overwhelmingly, the women preferred the odors of men with the most dissimilar MHCs to their own (see: adjacent video).
The site e (Alexa-rank: 1,100) founded in 2000 by American psychologist Neil Warren and Greg Forgatch, whose vision is not simply to create marriages, but to create happy marriages by using scientific research to unite compatible individuals.
"I love the challenge, that people think: How could you possibly measure interpersonal chemistry?