Matthew Perry's funeral took place on Friday in Los Angeles, following his sudden death due to a cardiac arrest on October 28. All of Perry's co-stars from "Friends" attended this intimate ceremony.

How might adaptations of centromere proteins prevent drive or otherwise suppress the costs of nonrandom segregation? And what does all this mean for the evolution of populations and species? Random ...

Preliminary results in the random trial in subjects largely completing full years of follow-up were as follows: In the nonrandom trial, results also tended to favor surgical subjects, but the ...