Interview with PPPL Scientists (AUDIO) DOE/Princeton Plasma Physics Laboratory Your browser does not support the audio element. Caption David Gates and Luis Delgado-Aparicio discuss a solution they discovered that could eliminate a critical barrier to fusion. Credit John Greenwald/PPPL Office of Communications Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.