Atmospheric carbon dioxide (CO2) levels have increased dramatically in the last few decades", writes Maria Cardona for University of Malta's Think magazine. Besides the cause of global warming, CO2 affects negatively the marine life, and ultimately, us, humans.
Watch the interview with Maria and find out about the colourful solution she developed to monitor the level of acidity in water.
This feature has been organised with the cooperation of Think magazine, the university science magazine.