When I was a child growing up in Maine, one of my favorite things to do was to look for sand dollars on the seashores of Maine, because my parents told me it would bring me luck. But you know, these shells, they're hard to find. They're covered in sand. They're difficult to see.

Archaeology holds all the keys to understanding who we are and where we come from.

It's absolutely critical, you know, to train young men and women not just to find sites, but also to protect sites, especially in the wake of the Arab Spring. There's been significant site-looting in Egypt and elsewhere across the Middle East.

WorldView-3 goes into the mid-infrared wavelength, allowing you to see very subtle geological differences on the sites at a 0.4-metre resolution.

Research shows that children do better in school and are less likely to drop out when fathers are involved. Engaged parents can strengthen communities, mentor and tutor students, and demonstrate through their actions how much they value their children's education.

A lot of Ivy League schools have presidents who are very politically active. And I don't think it has an impact on whether a student chooses a school or a donor gives to a school.

Sometimes people think that I'm maybe pretentious or just weird, a fraud, or fake, because I have a formal education and speak properly and give people respect.

Education then, beyond all other devices of human origin, is the great equalizer of the conditions of men, the balance-wheel of the social machinery.