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Non-compact lattice QED is simulated for various numbers of fermion species$N_f$ ranging from 8 through 40 by the exact Hybrid Monte Carlo algorithm. Overthis range of $N_f$, chiral symmetry breaking is found to be stronglycorrelated with the effective monopoles in the theory. For $N_f$ between 8 and16 the chiral symmetry breaking and monopole percolation transitions are secondorder and coincident. Assuming powerlaw critical behavior, the correlationlength exponent for the chiral transition is identical to that of monopolepercolation. This result supports the conjecture that monopole percolation``drives" the nontrivial chiral transition. For $N_f$ between 20 and 32, themonopoles experience a first order condensation transition coincident with afirst order chiral transition. For $N_f$ as large as 40 both transitions arestrongly suppressed. The data at large $N_f (N_f \mathrel {\mathpalette \vereq>} 20)$ is interpreted in terms of a strongly interacting monopole gas-liquidtransition.Comment: Revtex file, 23 pages, hardcopy figures only

Interplay of monopoles and chiral symmetry breaking in noncompact lattice QED