As readers of this blog know, I’ve long warned of the dangers of keeping monkeys near urban centers. Now, another tragedy underscores the urgency of the danger:

A male chimpanzee in a Swedish zoo planned hundreds of stone-throwing attacks on zoo visitors, according to researchers.

Keepers at Furuvik Zoo found that the chimp collected and stored stones that he would later use as missiles.

How many more years does humanity have until the dreaded Chimp Infitada?