[OS X TeX] page breaks between sections

[Nitecki, Zbigniew H.]

I am preparing a paper using the amsart document class; the paper is divided into sections using \section.
In contrast to what I recall in earlier versions, the class appears to (1) put title, acknowledgements and abstract on a separate cover page, and (2) start each section on a new page.  Is there a way to prevent (2), if not also (1)?

Zbigniew Nitecki
Department of Mathematics
Tufts University
Medford, MA 02155

telephones:
Office    (617)627-3843
Dept.    (617)627-3234
Dept. fax    (617)627-3966
http://www.tufts.edu/~znitecki/