  I am summarizing here the determination of the top-quark mass from the CDF
and D0 Collaborations at the Tevatron and the ATLAS and CMS Collaborations at
the LHC using non-conventional methods. I am concentrating on the extraction of
the top-quark mass from the top-antitop cross-section, on the mass measurement
using the so-called endpoint method and on the top-quark mass determination
from the b-lifetime. Other alternative methods are described in another article
