How To Identify Where Love Ends And Toxicity Begins

The strongest predictors of sexual satisfaction, according to a recent study, are not sexual variables but relationship variables, such as romantic love and relationship satisfaction.

NASA's InSight lander is likely retiring later this year. But thanks to its marsquake-measuring seismometer, the lander has already revealed a great deal about the internal structure of the Red Planet. Here's the basics of what different seismic waves (p-, s-, Rayleigh, and Love waves) can teach us.