by Phineas RUECKERT PARIS, France (AFP) — Global warming is turning clear mountain lakes green in the western United States because of an increase in algae blooms “without historical precedent”, researchers reported on Tuesday. The concentration of algae in two remote mountain lakes more than doubled in the past 70 years, researchers at Colorado State University found. Their results, published in the British Royal Society journal Proceedings B, highlight the potentially harmful effects of climate […]