1 00:00:12,240 --> 00:00:14,950 the germans call it volchterben 2 00:00:14,950 --> 00:00:14,960 the germans call it volchterben 3 00:00:14,960 --> 00:00:17,430 the germans call it volchterben meaning death of the forests 4 00:00:17,430 --> 00:00:17,440 meaning death of the forests 5 00:00:17,440 --> 00:00:20,150 meaning death of the forests all over the world large wooded areas 6 00:00:20,150 --> 00:00:20,160 all over the world large wooded areas 7 00:00:20,160 --> 00:00:23,109 all over the world large wooded areas once lush and green are now sickly and 8 00:00:23,109 --> 00:00:23,119 once lush and green are now sickly and 9 00:00:23,119 --> 00:00:24,390 once lush and green are now sickly and gray 10 00:00:24,390 --> 00:00:24,400 gray 11 00:00:24,400 --> 00:00:26,150 gray seeking reasons for this dramatic 12 00:00:26,150 --> 00:00:26,160 seeking reasons for this dramatic 13 00:00:26,160 --> 00:00:28,870 seeking reasons for this dramatic decline scientists including a group 14 00:00:28,870 --> 00:00:28,880 decline scientists including a group 15 00:00:28,880 --> 00:00:31,589 decline scientists including a group from nasa have been studying the problem 16 00:00:31,589 --> 00:00:31,599 from nasa have been studying the problem 17 00:00:31,599 --> 00:00:35,110 from nasa have been studying the problem on camel's hump mountain in vermont 18 00:00:35,110 --> 00:00:35,120 on camel's hump mountain in vermont 19 00:00:35,120 --> 00:00:37,110 on camel's hump mountain in vermont this photograph was taken from camel's 20 00:00:37,110 --> 00:00:37,120 this photograph was taken from camel's 21 00:00:37,120 --> 00:00:39,830 this photograph was taken from camel's hump in 1963. 22 00:00:39,830 --> 00:00:39,840 hump in 1963. 23 00:00:39,840 --> 00:00:42,150 hump in 1963. here's what this same area looked like 24 00:00:42,150 --> 00:00:42,160 here's what this same area looked like 25 00:00:42,160 --> 00:00:44,389 here's what this same area looked like 20 years later 26 00:00:44,389 --> 00:00:44,399 20 years later 27 00:00:44,399 --> 00:00:46,630 20 years later to find out why nasa researchers have 28 00:00:46,630 --> 00:00:46,640 to find out why nasa researchers have 29 00:00:46,640 --> 00:00:49,350 to find out why nasa researchers have been gathering samples of dying trees on 30 00:00:49,350 --> 00:00:49,360 been gathering samples of dying trees on 31 00:00:49,360 --> 00:00:52,150 been gathering samples of dying trees on various parts of the mountain 32 00:00:52,150 --> 00:00:52,160 various parts of the mountain 33 00:00:52,160 --> 00:00:53,430 various parts of the mountain there you go 34 00:00:53,430 --> 00:00:53,440 there you go 35 00:00:53,440 --> 00:00:54,389 there you go yep 36 00:00:54,389 --> 00:00:54,399 yep 37 00:00:54,399 --> 00:00:57,510 yep yeah look at the fluorosis on this one 38 00:00:57,510 --> 00:00:57,520 yeah look at the fluorosis on this one 39 00:00:57,520 --> 00:01:00,150 yeah look at the fluorosis on this one these samples bagged and labeled in the 40 00:01:00,150 --> 00:01:00,160 these samples bagged and labeled in the 41 00:01:00,160 --> 00:01:02,790 these samples bagged and labeled in the field will later be analyzed in area 42 00:01:02,790 --> 00:01:02,800 field will later be analyzed in area 43 00:01:02,800 --> 00:01:04,710 field will later be analyzed in area laboratories 44 00:01:04,710 --> 00:01:04,720 laboratories 45 00:01:04,720 --> 00:01:06,950 laboratories one theory why forests are dying is 46 00:01:06,950 --> 00:01:06,960 one theory why forests are dying is 47 00:01:06,960 --> 00:01:09,429 one theory why forests are dying is what's popularly referred to as acid 48 00:01:09,429 --> 00:01:09,439 what's popularly referred to as acid 49 00:01:09,439 --> 00:01:10,550 what's popularly referred to as acid rain 50 00:01:10,550 --> 00:01:10,560 rain 51 00:01:10,560 --> 00:01:12,310 rain pollutants caused by the burning of 52 00:01:12,310 --> 00:01:12,320 pollutants caused by the burning of 53 00:01:12,320 --> 00:01:15,190 pollutants caused by the burning of fossil fuels get into the atmosphere 54 00:01:15,190 --> 00:01:15,200 fossil fuels get into the atmosphere 55 00:01:15,200 --> 00:01:17,270 fossil fuels get into the atmosphere are moved around our planet by air 56 00:01:17,270 --> 00:01:17,280 are moved around our planet by air 57 00:01:17,280 --> 00:01:18,310 are moved around our planet by air currents 58 00:01:18,310 --> 00:01:18,320 currents 59 00:01:18,320 --> 00:01:20,789 currents and fall back to earth in the rain 60 00:01:20,789 --> 00:01:20,799 and fall back to earth in the rain 61 00:01:20,799 --> 00:01:23,990 and fall back to earth in the rain absorbed by plants and trees 62 00:01:23,990 --> 00:01:24,000 absorbed by plants and trees 63 00:01:24,000 --> 00:01:26,149 absorbed by plants and trees based on their analysis of the samples 64 00:01:26,149 --> 00:01:26,159 based on their analysis of the samples 65 00:01:26,159 --> 00:01:28,469 based on their analysis of the samples collected on camel's home nasa 66 00:01:28,469 --> 00:01:28,479 collected on camel's home nasa 67 00:01:28,479 --> 00:01:31,030 collected on camel's home nasa scientists are not convinced that acid 68 00:01:31,030 --> 00:01:31,040 scientists are not convinced that acid 69 00:01:31,040 --> 00:01:34,230 scientists are not convinced that acid rain is the sole cause of the problem 70 00:01:34,230 --> 00:01:34,240 rain is the sole cause of the problem 71 00:01:34,240 --> 00:01:36,550 rain is the sole cause of the problem but they do think it's a factor 72 00:01:36,550 --> 00:01:36,560 but they do think it's a factor 73 00:01:36,560 --> 00:01:40,069 but they do think it's a factor dr barry rock explained some rainfall 74 00:01:40,069 --> 00:01:40,079 dr barry rock explained some rainfall 75 00:01:40,079 --> 00:01:42,310 dr barry rock explained some rainfall measurements on camel's hump have been 76 00:01:42,310 --> 00:01:42,320 measurements on camel's hump have been 77 00:01:42,320 --> 00:01:44,390 measurements on camel's hump have been just horrendous we're approaching 78 00:01:44,390 --> 00:01:44,400 just horrendous we're approaching 79 00:01:44,400 --> 00:01:46,710 just horrendous we're approaching vinegar we're approaching battery acid 80 00:01:46,710 --> 00:01:46,720 vinegar we're approaching battery acid 81 00:01:46,720 --> 00:01:48,710 vinegar we're approaching battery acid in terms of the acidity 82 00:01:48,710 --> 00:01:48,720 in terms of the acidity 83 00:01:48,720 --> 00:01:51,429 in terms of the acidity uh certainly that's got to have some 84 00:01:51,429 --> 00:01:51,439 uh certainly that's got to have some 85 00:01:51,439 --> 00:01:56,630 uh certainly that's got to have some effect on on vegetation 86 00:01:56,630 --> 00:01:56,640 87 00:01:56,640 --> 00:01:58,230 specially equipped 88 00:01:58,230 --> 00:01:58,240 specially equipped 89 00:01:58,240 --> 00:02:00,389 specially equipped and satellites are also being used in 90 00:02:00,389 --> 00:02:00,399 and satellites are also being used in 91 00:02:00,399 --> 00:02:03,109 and satellites are also being used in the investigation to produce imagery of 92 00:02:03,109 --> 00:02:03,119 the investigation to produce imagery of 93 00:02:03,119 --> 00:02:05,190 the investigation to produce imagery of the study sites 94 00:02:05,190 --> 00:02:05,200 the study sites 95 00:02:05,200 --> 00:02:07,510 the study sites because the health of a plant or tree 96 00:02:07,510 --> 00:02:07,520 because the health of a plant or tree 97 00:02:07,520 --> 00:02:09,350 because the health of a plant or tree determines how it shows up in these 98 00:02:09,350 --> 00:02:09,360 determines how it shows up in these 99 00:02:09,360 --> 00:02:12,550 determines how it shows up in these images they provide a very accurate way 100 00:02:12,550 --> 00:02:12,560 images they provide a very accurate way 101 00:02:12,560 --> 00:02:15,350 images they provide a very accurate way of discovering mapping and monitoring 102 00:02:15,350 --> 00:02:15,360 of discovering mapping and monitoring 103 00:02:15,360 --> 00:02:17,430 of discovering mapping and monitoring damaged areas 104 00:02:17,430 --> 00:02:17,440 damaged areas 105 00:02:17,440 --> 00:02:19,990 damaged areas nasa scientists now plan to use even 106 00:02:19,990 --> 00:02:20,000 nasa scientists now plan to use even 107 00:02:20,000 --> 00:02:22,470 nasa scientists now plan to use even more advanced airborne instruments to 108 00:02:22,470 --> 00:02:22,480 more advanced airborne instruments to 109 00:02:22,480 --> 00:02:25,270 more advanced airborne instruments to detect the very first stages of forest 110 00:02:25,270 --> 00:02:25,280 detect the very first stages of forest 111 00:02:25,280 --> 00:02:28,229 detect the very first stages of forest decline before it becomes obvious 112 00:02:28,229 --> 00:02:28,239 decline before it becomes obvious 113 00:02:28,239 --> 00:02:30,790 decline before it becomes obvious then we have some hope of being able to 114 00:02:30,790 --> 00:02:30,800 then we have some hope of being able to 115 00:02:30,800 --> 00:02:32,470 then we have some hope of being able to treat the patient before it is 116 00:02:32,470 --> 00:02:32,480 treat the patient before it is 117 00:02:32,480 --> 00:02:35,110 treat the patient before it is terminally ill 118 00:02:35,110 --> 00:02:35,120 terminally ill 119 00:02:35,120 --> 00:02:37,670 terminally ill small vermont sawmills and the worldwide 120 00:02:37,670 --> 00:02:37,680 small vermont sawmills and the worldwide 121 00:02:37,680 --> 00:02:39,990 small vermont sawmills and the worldwide lumber industry in general could soon 122 00:02:39,990 --> 00:02:40,000 lumber industry in general could soon 123 00:02:40,000 --> 00:02:42,949 lumber industry in general could soon begin feeling the impact of bolstering 124 00:02:42,949 --> 00:02:42,959 begin feeling the impact of bolstering 125 00:02:42,959 --> 00:02:45,270 begin feeling the impact of bolstering but as dr rock points out the problem 126 00:02:45,270 --> 00:02:45,280 but as dr rock points out the problem 127 00:02:45,280 --> 00:02:48,630 but as dr rock points out the problem really goes beyond economic concerns 128 00:02:48,630 --> 00:02:48,640 really goes beyond economic concerns 129 00:02:48,640 --> 00:02:51,030 really goes beyond economic concerns the spruce trees on camel sump and in 130 00:02:51,030 --> 00:02:51,040 the spruce trees on camel sump and in 131 00:02:51,040 --> 00:02:53,190 the spruce trees on camel sump and in the black forest are 132 00:02:53,190 --> 00:02:53,200 the black forest are 133 00:02:53,200 --> 00:02:56,869 the black forest are very sensitive indicators of stress 134 00:02:56,869 --> 00:02:56,879 very sensitive indicators of stress 135 00:02:56,879 --> 00:02:59,270 very sensitive indicators of stress and they may well end up being the the 136 00:02:59,270 --> 00:02:59,280 and they may well end up being the the 137 00:02:59,280 --> 00:03:01,110 and they may well end up being the the canary in the mine shaft 138 00:03:01,110 --> 00:03:01,120 canary in the mine shaft 139 00:03:01,120 --> 00:03:03,190 canary in the mine shaft and since we can't easily get out of our 140 00:03:03,190 --> 00:03:03,200 and since we can't easily get out of our 141 00:03:03,200 --> 00:03:05,110 and since we can't easily get out of our particular mine shaft we're going to 142 00:03:05,110 --> 00:03:05,120 particular mine shaft we're going to 143 00:03:05,120 --> 00:03:07,350 particular mine shaft we're going to have to start looking at means of 144 00:03:07,350 --> 00:03:07,360 have to start looking at means of 145 00:03:07,360 --> 00:03:10,790 have to start looking at means of improving the atmospheric conditions 146 00:03:10,790 --> 00:03:10,800 improving the atmospheric conditions 147 00:03:10,800 --> 00:03:13,270 improving the atmospheric conditions nasa's damage assessment effort 148 00:03:13,270 --> 00:03:13,280 nasa's damage assessment effort 149 00:03:13,280 --> 00:03:21,750 nasa's damage assessment effort looking at the trees to save the forests 150 00:03:21,750 --> 00:03:21,760 151 00:03:21,760 --> 00:03:23,840 you