Carbon Sinks Cannot Keep Up With Emissions DURHAM, North Carolina, May 16, 2002 (ENS) - Carbon absorption by natural ecosystems may no longer be able to keep up with manmade carbon dioxide (CO2) emissions, a new study warns. The study, which appears in today's issue of the journal "Nature," suggests that natural carbon absorption into what are sometimes called "carbon sinks" is about to fall short of what is needed to counteract the rise in atmospheric CO2 due to fossil fuel burning and loss of forest. A study of the reaction of a Texas grassland to a range of...