By Lynn Eden, Robert Rosner, Rod Ewing, Sivan Kartha, Edward “Rocky” Kolb, Lawrence M. Krauss, Leon Lederman, , M. V. Ramana, Jennifer Sims, Richard C. J. Somerville, Sharon Squassoni, Elizabeth J. Wilson, David Titley, Ramamurti Rajaraman, James E. Hansen | Analysis, Biosecurity, Climate Change, Nuclear Energy, Nuclear Weapons, Technology and Security