Let (M,J) be a compact complex a-manifold which admits a Kahler metric
for which the integral of the scalar curvature is non-negative. Also
suppose that M does not admit a Ricci-flat Kahler metric. Then if M is
blown up at sufficiently many points, the resulting complex surface (
(M) over tilde,(J) over tilde) admits Kahler metrics with scalar curva
ture identically equal to zero. This proves Conjecture 1 of [16].