I ain't got answers to questions that big, but I also feel like my values are under attack, and I don't know why.

A courageous woman, her name is Najla Hariri, she's a Saudi woman in the city of Jeddah, she drove a car and she announced but she didn't record a video.

More than how a phenomenon works, theoretical physicists are always interested in why a phenomenon works in the way it works.

And I started having these bizarre dinner parties on Friday nights, where people would come over and we'd do DNA extractions, and I would capture them on video, because it created this kind of funny portrait as well.

And while we're busy pretending not to see, we are not being aware of the ways in which racial difference is changing people's possibilities, that's keeping them from thriving, and sometimes it's causing them an early death.

Upon his death, his brain was preserved and scanned before being cut into over 2000 individual slices and photographed to form a digital map down to the level of individual neurons, all in a live broadcast watched by 400, 000 people.

When plankton concentrations become patchy, manta rays feed alone and they somersault themselves backwards again and again, very much like a puppy chasing its own tail.

(Laughter) We turned this into a movie, and then after the movie came out, a known hate group spent 300, 000 dollars on an anti-Muslim poster campaign with the MTA -- that's the New York City subway system.

It turns out that there are remarkable signs of progress out there, often in the most unexpected places, and they've convinced me that our great global challenges may not be so unsolvable after all.

And whereas an airplane that's designed badly crashes to the earth and everyone sees it, an algorithm designed badly can go on for a long time, silently wreaking havoc.

Instead of spending 12, 15 hours a day with my face plastered to a screen, I was having these little adventures with our new family and shooting video along the way, and it was kind of a symbiosis of art and life.

Within the sphere of people who have that view, and it's a large number of people in the Muslim world who disagree with bin Laden in his application, but agree that Islam is the answer.

So what we see is with these and other new materials that we can do things with different properties -- lighter, stronger -- and apply these new materials to the environmental problems.

Everybody knows that we can do better with a visual thing that can be interactive with the patient, where they see the video and they're being videoed and they press, do you understand this? No, I don't.

And this girl, when she was 17 years old, wore a burqa in Afghanistan, and went into the stadiums and documented the atrocities that were going on towards women, underneath her burqa, with a video.

The human juggernaut is permanently eroding Earth's ancient biosphere by a combination of forces that can be summarized by the acronym "HIPPO, " the animal hippo.