Environment Counts | 49.6% of stream miles in Minnesota have been altered by humans :
Published by geoff on 2013-11-27 Over the past two years the Minnesota Pollution Control Agency (MPCA)and the Minnesota Geospatial Information Office (MNGeo) have visually reviewed stream channels in Minnesota using aerial imagery from the previous 30 years, historical aerial imagery dating back to the 1930s, very recent LiDAR imagery and MPCA biological monitoring photographs. Minnesota […]
Environment Counts | New Canadian air quality standards for particulate matter and ground-level ozone :
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