Those jellies! The current global increase in jellyfish may be nothing more than a consequence of a normal 20-year fluctuation cycle. A new multinational collaborative study suggests these trends may be overstated, finding that there is no robust evidence for a global increase in jellyfish over the past two centuries.
This goes to prove, as if we needed more proof, that research is needed before jumping to conclusions on any environmental issue. That goes for both sides of the environmental spectrum.
http://www.futurity.org/science-technology/jellyfish-bloom-may-be-a-bust/