How rising CO2 concentrations affect plants? They're 'struggling'

Carbon dioxide (CO2) levels and its affect on plant life have been studied from space. NASA's Goddard Space Flight Center reports that land ecosystems are becoming "progressively less efficient at absorbing the increasing levels of CO2 from the atmosphere." Credit: NASA's Goddard Space Flight Center Kathryn Mersmann (USRA): Lead Producer Esprit Smith (KBR): Lead Writer Benjamin Poulter (NASA/GSFC): Scientist