Deutsche Presse-Agentur: The rising emissions of greenhouse gases and the resultant climate change are adding to the threats to the world’s dwindling stocks of fish, the UN Environment Programme (UNEP) said in a report made public on Friday. The main problem is the changes in circulation brought on by the fading and falling of the ocean’s natural pumping system, which may “seriously impact” three-fourths of the globe’s key fishing grounds. “These natural pumps, dotted at sites across the …