  We present an extensive study of the static and dynamic properties of systems
of spin-polarized tritium atoms. In particular, we calculate the two-body
|F,m_F>=|0,0> s-wave scattering length and show that it can be manipulated via
a Feshbach resonance at a field strength of about 870G. Such a resonance might
be exploited to make and control a Bose-Einstein condensate of tritium in the
|0,0> state. It is further shown that the quartet tritium trimer is the only
bound hydrogen isotope and that its single vibrational bound state is a
Borromean state. The ground state properties of larger spin-polarized tritium
clusters are also presented and compared with those of helium clusters.

Atomic Physics