BBC: Global warming could pose a serious threat to fish stocks around Scotland’s coast, according to a new study. Researchers at Loch Lomond Aquarium, near Balloch, studied the breeding of rays at different water temperatures. They found that in warmer water, the rays’ eggs hatched earlier and their offspring were less capable of producing healthy young of their own. The 15-month study examined the effects of three different temperatures on 400 ray eggs. The eggs, …