When was the last time you texted your friend just like that? Research shows checking-in on people can be extremely meaningful. An unexpected 'Hello', or 'How are you?' can make a person feel valued, happy. Palki Sharma tells you more.

Gravitas: A case for texting a friend

Why do tech companies care so much about self-driving cars? If drivers no longer need to pay attention to the road, they can use their mobile devices even more

Opinion: Why Google & Apple want you to text and drive

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