HAL 9000 he's not. But Kirobo, the first-ever talking robot in space is heading to the International Space Station this week ahead of his human companion, Japanese astronaut Kochi Wakata, who takes over as ISS commander in November.
Fewer than 10 percent of all mammal species are monogamous. In fact, biologists have long disagreed over why monogamy exists at all. That's the subject of two studies published this week — and they come to different conclusions.
Animals that leave the most offspring win the race to spread their genes and to perpetuate their lineage. So for most mammals, males have a simple strategy: Mate with as many females as possible.
"Monogamy is a problem," says Dieter Lukas, a biologist at Cambridge University. "Why should a male keep to one female?"