<p>We used to think that of our primate relatives, chimps were the more aggressive ape and bonobos were more peaceful. A recent study found that bonobos are just as antagonistic as chimps, but it's the females targeting males.</p><p><br></p><p>PLUS:</p><p><br></p><ul><li>Mission to deflect an asteroid was a smashing success</li><li>Low gravity environments can lead to stronger blood clots in astronauts</li><li>From fire to galaxy formation, a celebration of friction as a fundamental force</li><li>Winter spiders survive subzero temperatures with a potent antifreeze</li></ul><p><br></p>