Forgetting Bad Memories
The brain has two very different mechanisms for erasing bad memories.


The insulation surrounding nerves develops more quickly in chimpanzees than in humans.

MEDICAL BREAKTHROUGHS - A new drug that could block heroin addiction, how mice could speed up AIDS …

A drug called (+)-naloxone blocks the brain’s addiction to heroin and other opiates.

ANIMAL SURVIVAL - Naked mole-rats defy old age, vampire spiders attack Franken-mosquitoes, dogs …
Neuroscientists used poker games and MRI scans to separate social from purely strategic decision …

Researchers find a link between a common parasite and suicide attempts in humans.

BRAINS & BEHAVIOR - How the brain quickly overcomes arachnophobia. Why psychopaths' brains are …

Men that sire children later in life may pass on an advantage to their grandchildren.

