cancer in this country because we know the primary cause is tobacco. The problem has almost moved from it being a research problem to being a public health problem.' One of the problems facing researchers is that lung cancer patients are more ill by the time they are diagnosed than many other patients. But there has been substantial progress in fighting the disease, at least in men from the hig...

We use comparisons between the shapes of gravitational lens galaxies and models for their mass distributions to derive statistical constraints on the alignment of the mass distribution relative to the observed lens galaxy and on the strength of tidal shear perturbations. The mass distributions are aligned with the luminous galaxies, with a ∆θ 2 1/2 < 10 • upper limit on the dispersion in the an...