HumansUnhappy Valentine’s: Why bad memories of your ex are so hard to shake As time passes, our memories of negative emotions normally fade faster than positive ones, helping us to move on. But this isn’t the case when it comes to exes News
MindMemory special: What happens to your memories while you sleep? As you slumber, the brain is a whir of activity sorting and storing your memories. How does it know which to choose, and how can you game the system? Features