Prior to noncooperative choices of abatement of a transboundary pollut
ant, a technologically advanced country considers making an unconditio
nal transfer of abatement technology to its less-advanced rival. Even
though technological aid is given unconditionally and abatement strate
gies are chosen noncooperatively, in a number of plausible circumstanc
es, a transfer of a superior control technology will induce Pareto-sup
erior pollution abatement.