WEBVTT FILE 1 00:00:00.000 --> 00:00:02.320 A new NASA study shows that snow 2 00:00:02.340 --> 00:00:04.720 that has become darkened by aerosols, 3 00:00:04.740 --> 00:00:06.150 melts more quickly, 4 00:00:06.170 --> 00:00:07.390 reducing snow amounts 5 00:00:07.410 --> 00:00:10.260 and leading to increased ground warming during spring 6 00:00:10.280 --> 00:00:12.350 in parts of the Northern Hemisphere. 7 00:00:12.370 --> 00:00:15.028