engineers in japan built a sociable robot named Wakamaru. they designed wakamaru to help and serve people in a friendly, caring, and intelligent way. wakamaru can recognize faces and use gestures . It know 10,000 words ane can use them to talk to people about the weather and other subjects. wakamaru can do many tasks for a family. for example, at night, it moves quietly around the house, but it can wake family members up if there is any trouble. during the day, wakamaru can also send them email and text messages.