Carlos Penha-Goncalves (IMAGE) Instituto Gulbenkian de Ciencia Caption This is Carlos Penha-Goncalves. Credit Roberto Keller (IGC) Usage Restrictions Credits should be mentioned every time this image is used. 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.