This pleased Onyango, for to him knowledge was the source of all the white man's power, and he wanted to make sure that his son was as educated as any white man.

There's been a lot of talk about body cameras as a silver bullet or a solution. I think the task force concluded that there is a role for technology to play in building additional trust and accountability, but it's not a panacea, it has to be embedded in a broader change in culture and a legal framework that ensures that people's privacy is respected and that not only police officers but the community themselves feel comfortable with how technologies are being used.

What we can be scientifically certain of is that our continued use of fossil fuels is pushing us to a point of no return

For too many of us, it's become safer to retreat into our own bubbles, whether in our neighborhoods or on college campuses, or places of worship or especially our social media feeds, surrounded by people who look like us and share the same political outlook and never challenge our assumptions. And increasingly, we become so secure in our bubbles that we start accepting only information, whether it's true or not, that fits our opinions, instead of basing our opinions on the evidence that is out there.

When it comes to crime, the violent crime rate in America has been lowered during my presidency and any time in the last three, four decades.

Black children, white children, Latino children. America is becoming more diverse, it's becoming more tolerant as a consequence there's more interactions between groups. There are going be tensions that arise.

I want to express our grieve and condolences to the families of two hostages: one American, Dr. Warren Weinstein and an Italian Giovanni LaPorto who were tragically killed in a U.S. counterterrorism operation.