Matt Ridley reports on a new paper in Current Biology, which finds that natural variations in pH along the Great Barrier Reef are larger than anything likely under global warming:
The good news from the research, says Professor Hughes, is that complete reef wipeouts appear unlikely due to temperature and pH alone.
"However, in many parts of the world, coral reefs are also threatened by much more local impacts, especially by pollution and over-fishing. We need to address all of the threats, including climate change, to give coral reefs a fighting chance for the future."