The NASA astrobiology roadmap

David J. Des Marais, Louis J. Allamandola, Steven A. Benner, Alan P. Boss, David Deamer, Paul G. Falkowski, Jack Farmer, S. Blair Hedges, Bruce M. Jakosky, Andrew H. Knoll, David R. Liskowsky, Victoria S. Meadows, Michael A. Meyer, Carl B. Pilcher, Kenneth H. Nealson, Alfred M. Spormann, Jonathan D. Trent, William W. Turner, Neville J. Woolf, Harold W. Yorke