Looking for love? The right appearance is important. Female black-and-white snub-nosed monkeys seem to prefer guys with rouged lips. READ MORE

The romantic gifts of nursery web spiders will work as self-defense READ MORE

No magic mix of personality traits on paper can discern how romantic matches will turn out in real life. READ MORE

Here's some inspiration for those of you with a secret crush on your science fair partner.  READ MORE

Contraceptive tactics include stopping sperm from developing and saving eggs for later. READ MORE

Extreme temperatures might mess with RNA from two genes.  READ MORE

When species manage to mix, the odds are stacked against their offspring. READ MORE

Treadmill, genetic tests show amphibians travel several kilometers to reproduce. READ MORE

Violence and escalation may typify mating-related conflict. READ MORE

But the additional mental power has downsides, too.  READ MORE

By recognizing the calls of other individuals, male elephant seals can avoid costly confrontations. READ MORE

Genetic evidence shows interbreeding after agriculture arrived from what’s now Turkey. READ MORE

Researcher dissects howler monkey roars. READ MORE

Patricia Brennan has made a splash with her studies of genitalia and fit.  READ MORE

RNA-packed vesicles that glom on to the germ cells can be altered by a stress hormone, a mouse study suggests. READ MORE

Extreme temperatures might mess with RNA from two genes.  READ MORE