As with sound, images are subjective. You and I may not see the same color red as red, but we will probably agree that the image on the screen is a digital image or film image, based on contrast, bit...

When you think about the scale of human populations all over the world and the fact that there's so much here, really, the only way to be able to visualize that is to pull back in space... It allows...

The process of speciation is completed with the cessation of genetic exchange.

The major source of photochemical smog - petroleum-fueled vehicles - can be replaced by emission-free electric vehicles.

Since my high school years, I have been interested in history, especially in Roman history, a topic on which I have read rather extensively. The Latin that goes with this kind of interest proved...

A cactus doesn't live in the desert because it likes the desert; it lives there because the desert hasn't killed it yet.

I didn't have a very starry school career, I was medium to above average, nothing special.

Most astronomical work has to do with things that are very, very far away and don't affect our lives very much.

My interest in the sciences started with mathematics in the very beginning, and later with chemistry in early high school and the proverbial home chemistry set.

I became interested in structure when I was in graduate school. How is it that the brain perceives structure in a sometimes disorganized and chaotic world? How and why do we categorize things? Why can...

The closer the bird is to the surface of the water, the firmer and more inelastic is the uplift of the rising air. The bird appears to almost feel the surface with the tip of its weather wing.

Something pretty mysterious had to give rise to the origin of the universe.

Power is the by-product of understanding.

If you think of feelings you have when you are awed by something - for example, knowing that elements in your body trace to exploded stars - I call that a spiritual reaction, speaking of awe and...

We live on this speck called Earth - think about what you might do, today or tomorrow - and make the most of it.

The current approach that psychiatry takes almost ignores social worlds in which mental health problems arise and tries to become highly biomedical like other branches of medicine such as cardiology...

What I tell founders is not to sweat the business model too much at first. The most important task at first is to build something people want. If you don't do that, it won't matter how clever your...