In Japan, happiness is... wearable sensors?

It is a problem that has defeated generations of philosophers, poets and painters, but one Japanese company thinks it has come up with a way of knowing for sure if people are happy.

New energy storage system for renewable technologies

Hitachi today announced that it has developed an all-in one, container-type energy storage system as a core energy product for ensuring the stable use of distributed renewable energy such as wind and solar power, while maintaining ...

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