Global texture as the origin of cosmic structure

If a unified theory possesses non-Abelian global symmetries which are spontaneously broken it gives rise to a three-dimensional defect known as texture. In an expanding universe texture obeys a ``scaling solution, '' which produces a constant density perturbation at horizon crossing of /m₆ₔₓ^{2/m₏₋₀₍₂₊^{2}}, where m₆ₔₓ is the scale of symmetry breaking. These (isocurvature) perturbations are broadly of Harrison-Zeldovich form, but are non-Gaussian, having strong ``spikes'' in the density field. Consequences for microwave background anisotropy are briefly discussed.