20th Century was the century of Physics. The century was bigun with Plank's theory of "Quanta" in 1900, and ended with elegant theory of strings, which is considered to be an answer of all the fundamental questions of the universe and giving birth to new wonders like parallel universe (at least theoritically :)). This is the reason why the String theory is also called " The Thoery of Everything". Things are changing in 21st Century. Scientists sound more interested in biology than physics. They want to study more about living cells and its components with their different mechanisms and transports. It seems to me that Biology and Physics are merging together as Chemistry and Physics had merged in 20th Century. The combined name is already in air, "Bio-Physics". Thanks to the information technology, even developing country like ours have already sensed this fact. Few weeks ago I read that the Kathmandu University has started to offer courses on Bio-Physics. Technological development of last century (Physics) will be the best probe to study biological systems. The advance form of this will be study of mind. Here is beginning .......... http://www.nature.com/news/2005/050926/full/050926-5.html