Scientists know aging occurs as cells are damaged throughout life, but new research published in Nature shows that breakdowns in the mitochondrial DNA of lab mice appears to play an important part in the process apart from environmental stresses.
The Strong, Loud Type Chris Christie is offering a blunt-talking tough-guy routine to win over voters.
The XX Factor
Duggar Revelations Are Just the Latest Sex Abuse Scandal to Rock Far-Right Fundamentalism
What Happened at Slate This Week? Assistant interactives editor Andrew Kahn on the best of Slate, from the history of slavery to Mad Men.
Ironic Misandry Claims Its First Victim A woman tweets #KillAllWhiteMen and the Internet explodes.
How Things Break Ali fought Liston 50 years ago. Two legends were born, but another was broken.