Live foraminifera under light microscope (IMAGE) University of Texas at Austin Caption A microscope image of a shelled plankton. According to research from The University of Texas at Austin, plankton populations like this flourished in the tropics during past global cooling and may vanish as the climate warms. Credit Tracy Aze Usage Restrictions Please credit Trace Aze when reusing the image. License Original 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.