New to Boost C++ - Dynamic Arrays

Hello,

I am interested in supporting dynamic arrays in my C++ application. I
read about STL, which somehow brought me to Boost C++...

I see Boost C++ provides the Array library, which only seems to
support static arrays... Does Boost C++ support dynamic arrays? Any
example I could use to understand how this work?
By any means, would this dynamic array library be thread safe?

Thanks!
Jean