Calls vs. balls: monkeys with more impressive roars produce less sperm

22 Oct 2015

Evolutionary ‘trade-off’ between size of throat and testes discovered in howler monkeys furthers Darwin’s theory of sexual selection and corresponds to mating systems: males with larger throats but smaller testes often have exclusive access to females, while those with larger testes share mates.    

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Test tubes

Tell donor-assisted children at early age, study says

10 Jul 2008

Parents with children conceived through assisted reproduction are likely to have good family relationships, but if they are going to tell their child about their donor conception, they should do so at an early age, Cambridge researchers have revealed.

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