The more we pour the big machines, the fuel, the pesticides, the herbicides, the fertilizer and chemicals into farming, the more we knock out the mechanism that made it all work in the first place.

I am thankful to Nichia Chemical Corporation and its founder Nobu Ogawa, who gave me the research opportunity to create a blue LED.

The period 1924 to 1929 was spent studying chemistry at the Czech Institute of Technology in Prague, Czechoslovakia. The supervisor of my thesis was Professor Emil Votocek, one of the prominent founders of chemical research in Czechoslovakia.

Once you get into space, you can really unleash a lot of creativity, but the launch itself? I have been through all of the creative ways, and believe me, chemical rockets are the best.

Rocket scientists agree that we have about reached the limit of our ability to travel in space using chemical rockets. To achieve anything near the speed of light we will need a new energy source and a new propellant. Nuclear fission is not an option.

It's a free society. But don't tell the world that we can feed the present population without chemical fertilizer. That's when this misinformation becomes destructive.

Visit a typical science classroom and you will discover far more than empirical facts being taught. The dominant worldview among scientific intellectuals is evolutionary naturalism, which holds that humans are essentially biochemical machines.

Falling in love, romance, matters of the heart - when you fall in love, on some biochemical level you know there is a chance it won't work out. It's ingrained in us that if you take such an enormous risk on someone with your heart that it might not pay off. I gamble all my chips and I might actually lose everything.

I think it's brain chemistry. I'm a positive, cheerful person, and I think it is absolutely the luck of the draw. I think the life I have had has come largely from the chemicals in my head. I see my life as good, and I think, a lot of times, if you see your life as good, then that's how it turns out.

Foods high in bad fats, sugar and chemicals are directly linked to many negative emotions, whereas whole, natural foods rich in nutrients - foods such as fruits, vegetables, grains and legumes - contribute to greater energy and positive emotions.

International peace and security depend on certain taboos that are easily recognized when they are broken. It can be more important for an intervention to take place because nuclear or chemical or biological weapons are used as opposed to just measuring how many people are killed.

The desire to keep television out of our son's life was one of the few parenting priorities my husband and I agreed on from the beginning. We debated the pros and cons of co-sleeping, of pacifiers, of chemical-free crib mattresses and baby sign language. The television question, on the other hand, was a no-brainer.

I'm not the first to admit that raising a child in Park Slope, Brooklyn, can bear an embarrassing resemblance to the TV show 'Portlandia.' My wife and I try to have some ironic distance from the culture of organic, chemical-free parenting, but we're often participants.

I consider nature a vast chemical laboratory in which all kinds of composition and decompositions are formed.

My mom didn't believe in putting chemicals in hair. But when I got to college, we didn't have A/C in our dorms freshman year. So after several days of waking up looking like a Chia Pet, I was like 'OK, I'm gonna get a perm.' And then my hair revolted and fell out. I was over that quick, fast and in a hurry.

Iraq has the most extensive petrochemical industry in the Middle East and a wealth of vaccine factories, single-cell protein research labs, medical and veterinary manufacturing centers and water treatment plants.

Through the continued accumulation of detailed and reliable knowledge about elementary reactions, we will be in a better position to understand, predict and control many time-dependent macroscopic chemical processes which are important in nature or to human society.

In the present state of our knowledge, it would be useless to attempt to speculate on the remote cause of the electrical energy... its relation to chemical affinity is, however, sufficiently evident. May it not be identical with it, and an essential property of matter?

Every intelligence agency in the world believed that Saddam Hussein had had weapons of mass destruction, precursor chemicals. The inspectors, over a period of ten years, had managed to gain access to much of those precursor chemicals.

They have involved co-operation between the Iraqi intelligence and al-Qaeda operatives on training and combined operations regarding bomb making and chemical and biological weapons.

America gave the world the notion of the melting pot - an alchemical cooking device wherein diverse ethnic and religious groups voluntarily mix together, producing a new, American identity. And while critics may argue that the melting pot is a national myth, it has tenaciously informed the America's collective imagination.

This I conceive to be the chemical function of humor: to change the character of our thought.

With a hundred and seventy-eight machines to sequence the precise order of the billions of chemicals within a molecule of DNA, B.G.I. produces at least a quarter of the world's genomic data - more than Harvard University, the National Institutes of Health, or any other scientific institution.

As a black person in America, I am twice as likely as a white person to live in an area where air pollution poses the greatest risk to my health. I am five times more likely to live within walking distance of a power plant or chemical facility - which I do.