We are able to find everything in our memory, which is like a dispensary or chemical laboratory in which chance steers our hand sometimes to a soothing drug and sometimes to a dangerous poison. Marcel Proust
Elements which are similar as regards their chemical properties have atomic weights which are either of nearly the same value (eg. Pt, Ir, Os) or which increase regularly (eg. K, Ru, Cs). Dmitri Mendeleev
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. Douglas Feith
There's another issue here - and I have some limits as to what I can say - but there's some real question as to the viability of the chemical masks, the protective gear used by our soldiers. Christopher Shays
We still do not know which are the most important factors, but perhaps the most likely is a combination, a double whammy of changes, such as a high-fat diet combined with increased environmental chemical exposures.
What we know from World War I is that some of our troops had acute symptoms of exposure to chemicals, had bad health and died because of chemical exposure in World War I. Christopher Shays
It has long been known that the chemical atomic weight of hydrogen was greater than one-quarter of that of helium, but so long as fractional weights were general there was no particular need to explain this fact, nor could any definite conclusions be drawn from it. Francis William Aston
The scenarios of biological or chemical warfare painted in detail by the American media during the months after September 11 only betray the inability of the government to determine the magnitude of the danger. Jurgen Habermas
There is no one area of chemical engineering that specifically helped me in my career as an astronaut, it was more the general education in engineering. Also, it was a very difficult and rigorous course. So, it made me strong and resourceful. Leroy Chiao
If the Bush Administration cannot ensure Americans that they will be safe from the flu, how will they protect our country against a possible bio-terror or chemical attack? The American people deserve better. Jon Corzine
After all, the universe required ten billion years of evolution before life was even possible; the evolution of the stars and the evolving of new chemical elements in the nuclear furnaces of the stars were indispensable prerequisites for the generation of life. John Polkinghorne
