Testing gravity on large scales. The skewness of the galaxy distribution   at z~1
  We study the evolution of the low-order moments of the galaxy overdensity distribution over the redshift interval 0.7<z<1.5. We find that the variance and the normalized skewness evolve over this redshift interval in a way that is remarkably consistent with predictions of first- and second-order perturbation theory. This finding confirms the standard gravitational instability paradigm over nearly 9 Gyrs of cosmic time and demonstrates the importance of accounting for the non-linear component of galaxy biasing to avoid disagreement between theory and observations. 
C. Marinoni, L. Guzzo, A. Cappi, O. Le Fevre, A. Mazure, B. Meneux, A.   Pollo, A. Iovino, H.J. McCracken, R. Scaramella, S....