mo11

Thank you everyone! It's good to hear that there's no age limitation in the US. Also, over 60 years old seems not too old compared to the professors in Quantum Buckyball's program. I'm surprised that they are still active, although they are over 70. I will contact with the professor during visiting weekends and see if his research is my best fit!

I was recently accepted to several chemistry programs and wondering which program to choose. I am interested in one professor of Caltech who is very famous and has great reputation from anyone. His lab seems not too big, and probably I don't have to worry about getting lost. However, I am concerned about the age of PI, as he is already over 60. As I am an international student, I have no idea how old is too old when you choose your research advisor for your PhD in the US. (In my country, all the professors have to retire when they become 65 years old.) I'm thinking of both working in academia and industry after my PhD, so I would like to listen to your opinion from both perspectives.