Hour after hour, Brian Dunn lofted his fly line into the turquoise-blue water of this shimmering desert lake north of Reno. Finally, just after lunch, his line straightened and a smile spread on his face. Before long, a 6-pound, ...

Biology - Ecology

May 13, 2013 5 / 5 (2) 0

Atmospheric contamination due to heavy metals is currently a severe problem of global proportions, with important repercussions in public health. However, this type of pollution is not a recent fact and can ...

Space & Earth - Environment

Apr 30, 2013 4.6 / 5 (5) 0