We prove that a 3-connected(1) closed manifold M of dimension n >= 5 does not admit a codimension-one C-2-foliation of nonnegative curvature. In particular, this gives a complete answer to a question of Stuck on the existence of codimension-one foliations of nonnegative curvature on spheres. We also consider codimension-one C-2-foliations of nonnegative Ricci curvature on a closed manifold M with leaves having finitely generated fundamental group, and show that such a foliation is flat if and only if M is a K(pi, 1)-manifold.
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