Artificial intelligence is growing up fast, as are robots whose facial expressions can elicit empathy and make your mirror neurons quiver.

On some summer days in New York City, the air hangs thickly visible, like the combined exhalations of eight million souls. Steam rising from vents underground makes you wonder if there isn't one giant sweat gland lodged beneath the city.

We're losing biodiversity globally at an alarming rate, and we need a cornucopia of different plants and animals, for the planet's health and our own.

Success produces success, just as money produces money.

If you're old enough to father a child, then you're old enough to accept financial responsibility for that child. If you don't want your embarrassing, unlawful, and irresponsible behavior going viral, man up and pay up.

Sometimes, having a mom stay home is a big help. On the other hand, when a mother works outside the home, her husband generally does more child care and has higher parental knowledge about his childrens' friends, routines, and needs, cutting across the tendency for fathers to be second-string parents at home.

Nobody is in their right to tell anybody how to spend their free time. If you like to spend it with your family or your kids, fantastic. If you want to spend it with your girlfriend, great. If you want to spend it doing charitable work, great. If you want to spend it through endorsements and marketing stuff, great.

It's not about me, it's about my family. You don't answer questions for you, but for us. You learn to live beyond yourself.