With the annual 'OMG there are earthquakes in Yellowstone and we are all going to die' news cycle in progress, I looked at the USGS web page for the earthquake swarm. The page was singularly uninformative because the swarm is very localized and you can't really tell what was going on from the picture. But they also have the raw data that the map is generated from available. And I thought "Hey, I'll bet I could generate a 3D scattergram of that data." And thanks to Perl and gnuplot, I could. More, I could even animate it. :) This will only work on *nix style systems with gnuplot installed. 
#!/usr/bin/perl

use strict;
use warnings;

use IO::Handle;

my @data          = <DATA>;
my $GNUPLOT_IOH   = IO::Handle->new;
$GNUPLOT_IOH->autoflush(1);
open($GNUPLOT_IOH, '|- ', 'gnuplot') || die( "Could not open a pipe to
+ gnuplot: $!\n");
my $x_rot = 70;
print $GNUPLOT_IOH "set title 'Yellowstone Earthquake Swarm'\n";
print $GNUPLOT_IOH "set xlabel 'Longitude'\n";
print $GNUPLOT_IOH "set ylabel 'Latitude'\n";
print $GNUPLOT_IOH "set zlabel 'Depth (km)\n";
for (my $y_rot = 0; $y_rot <= 360; $y_rot += 0.2) {
    print $GNUPLOT_IOH  "set view $x_rot,$y_rot\n";
    print $GNUPLOT_IOH "splot '-' using 4:3:5\n";
    print $GNUPLOT_IOH join('',@data);
    print $GNUPLOT_IOH "\ne\n"; 
    select(undef,undef,undef, 0.05); # sleep for 0.05 second
}
print $GNUPLOT_IOH "\nexit\n";
close($GNUPLOT_IOH);

exit;

################################################################
# Magnitude   Date             Latitude Longitude       Depth
__DATA__
2.7    2009/01/01:12:51:24    44.548    -110.361    -0.2
2.4    2009/01/01:10:13:52    44.541    -110.389    -0.2
#2.4    2009/01/01:10:12:57    44.325    -110.388    -37.0
2.3    2009/01/01:10:06:51    44.529    -110.370    -0.5
2.3    2009/01/01:10:02:57    44.528    -110.346    -0.2
1.6    2009/01/01:06:59:39    44.504    -110.340    -0.9
2.1    2009/01/01:05:29:09    44.507    -110.309    -1.5
2.2    2009/01/01:05:19:51    44.509    -110.350    -1.7
1.5    2008/12/31:15:05:00    44.514    -110.360    -1.1
3.3    2008/12/31:15:02:11    44.523    -110.361    -4.9
1.5    2008/12/31:12:50:01    44.518    -110.368    -2.0
1.1    2008/12/31:12:46:53    44.520    -110.362    -2.0
1.9    2008/12/31:12:42:06    44.519    -110.367    -0.1
1.6    2008/12/31:12:26:56    44.501    -110.385    -2.2
1.4    2008/12/31:12:23:52    44.520    -110.371    -1.0
1.7    2008/12/31:11:52:19    44.503    -110.371    -0.4
1.3    2008/12/31:11:40:04    44.526    -110.368    -2.2
1.6    2008/12/31:11:25:24    44.516    -110.376    -1.8
1.4    2008/12/31:11:25:11    44.523    -110.364    -2.2
1.4    2008/12/31:11:22:16    44.520    -110.382    -2.2
2.7    2008/12/31:11:15:44    44.522    -110.372    -1.2
1.5    2008/12/31:11:12:40    44.516    -110.373    -0.6
1.8    2008/12/31:11:08:59    44.532    -110.381    -0.4
2.4    2008/12/31:11:06:14    44.520    -110.371    -1.2
1.9    2008/12/31:11:05:12    44.532    -110.380    -0.3
1.3    2008/12/31:10:53:29    44.520    -110.364    -2.2
1.5    2008/12/31:10:52:23    44.546    -110.394    -0.7
1.9    2008/12/31:10:43:37    44.524    -110.372    -1.5
1.1    2008/12/31:10:26:01    44.532    -110.381    -2.0
1.8    2008/12/31:10:23:43    44.530    -110.380    -1.0
1.2    2008/12/31:10:23:07    44.529    -110.380    -0.9
1.5    2008/12/31:10:21:49    44.521    -110.373    -2.1
1.4    2008/12/31:10:16:44    44.527    -110.367    -0.8
1.4    2008/12/31:10:14:42    44.568    -110.444    -7.2
1.9    2008/12/31:10:13:50    44.531    -110.381    -2.1
1.4    2008/12/31:10:11:14    44.518    -110.369    -2.2
1.3    2008/12/31:10:08:13    44.529    -110.377    -2.0
1.1    2008/12/31:10:02:32    44.525    -110.378    -0.7
1.3    2008/12/31:09:56:38    44.525    -110.371    -1.8
1.1    2008/12/31:09:56:09    44.508    -110.362    -2.1
1.1    2008/12/31:09:45:54    44.511    -110.361    -2.5
1.7    2008/12/31:09:45:34    44.507    -110.364    -2.2
1.1    2008/12/31:09:45:02    44.516    -110.370    -2.3
1.2    2008/12/31:09:37:18    44.512    -110.356    -1.5
1.4    2008/12/31:09:34:27    44.522    -110.365    -0.1
1.3    2008/12/31:09:33:05    44.500    -110.369    -3.6
1.3    2008/12/31:09:26:32    44.535    -110.365    -0.9
1.9    2008/12/31:09:21:28    44.533    -110.380    -0.7
1.4    2008/12/31:09:16:01    44.525    -110.373    -2.2
1.3    2008/12/31:09:13:59    44.514    -110.370    -1.6
2.6    2008/12/31:09:05:59    44.520    -110.368    -0.5
3.6    2008/12/31:09:02:28    44.525    -110.362    -4.3
1.2    2008/12/31:09:00:19    44.518    -110.366    -1.9
2.5    2008/12/31:08:59:21    44.522    -110.362    -0.5
3.0    2008/12/31:08:58:11    44.527    -110.369    -1.3
1.1    2008/12/31:07:27:46    44.535    -110.355    -0.4
1.0    2008/12/31:06:19:28    44.528    -110.378    -1.0
1.5    2008/12/31:06:02:54    44.529    -110.358    -2.0
1.6    2008/12/31:05:59:03    44.531    -110.355    -2.0
1.1    2008/12/31:05:58:39    44.528    -110.377    -2.0
1.1    2008/12/31:05:24:55    44.543    -110.344    -0.1
1.2    2008/12/31:05:22:43    44.526    -110.379    -1.1
2.5    2008/12/31:05:17:41    44.530    -110.375    -1.1
2.8    2008/12/31:05:06:40    44.529    -110.382    -1.6
#1.0    2008/12/31:04:49:57    44.726    -111.162    -7.4
1.9    2008/12/30:20:21:32    44.535    -110.353    -0.0
#1.3    2008/12/30:19:05:33    44.731    -111.165    -7.3
2.8    2008/12/30:19:05:13    44.540    -110.350    -0.1
1.1    2008/12/30:19:01:06    44.533    -110.359    -2.3
2.8    2008/12/30:11:59:07    44.533    -110.374    -0.9
1.5    2008/12/30:09:17:43    44.525    -110.379    -0.0
1.4    2008/12/30:09:10:20    44.527    -110.380    -0.6
1.0    2008/12/30:04:02:27    44.503    -110.390    -2.4
1.1    2008/12/30:03:16:31    44.524    -110.406    -1.6
1.5    2008/12/30:03:11:35    44.552    -110.359    -2.1
1.0    2008/12/30:03:08:25    44.499    -110.379    -2.2
#1.2    2008/12/30:03:02:08    44.595    -110.318    -13.0
#1.1    2008/12/30:02:50:02    44.787    -110.996    -7.2
#1.2    2008/12/30:02:44:42    44.788    -110.995    -7.2
#1.2    2008/12/30:02:29:17    44.712    -111.147    -2.5
#1.6    2008/12/30:02:25:29    44.787    -111.001    -7.5
1.3    2008/12/30:02:13:36    44.516    -110.360    -2.5
1.0    2008/12/30:02:00:37    44.553    -110.341    -2.2
1.0    2008/12/30:01:51:00    44.517    -110.354    -1.8
1.3    2008/12/30:01:47:56    44.527    -110.381    -1.1
2.3    2008/12/30:01:47:26    44.532    -110.359    -2.0
1.7    2008/12/30:01:35:08    44.530    -110.361    -2.1
1.5    2008/12/30:01:15:37    44.522    -110.360    -2.1
2.1    2008/12/30:00:51:20    44.505    -110.373    -0.2
1.0    2008/12/30:00:41:35    44.522    -110.361    -1.8
2.8    2008/12/30:00:36:39    44.525    -110.362    -1.2
2.4    2008/12/29:21:25:15    44.525    -110.360    -2.0
1.6    2008/12/29:21:18:51    44.521    -110.362    -2.2
1.8    2008/12/29:21:18:36    44.522    -110.359    -2.1
2.9    2008/12/29:20:38:25    44.514    -110.381    -2.1
2.3    2008/12/29:20:38:04    44.511    -110.385    -2.3
1.0    2008/12/29:20:26:29    44.520    -110.355    -2.2
1.9    2008/12/29:20:14:26    44.498    -110.364    -2.3
1.4    2008/12/29:20:13:31    44.508    -110.359    -2.2
2.2    2008/12/29:19:56:46    44.522    -110.365    -1.2
1.2    2008/12/29:19:53:50    44.511    -110.377    -2.2
1.1    2008/12/29:19:46:13    44.515    -110.386    -2.4
1.7    2008/12/29:19:44:50    44.525    -110.373    -0.0
1.7    2008/12/29:19:40:27    44.511    -110.379    -2.5
2.4    2008/12/29:19:37:07    44.502    -110.366    -1.8
1.2    2008/12/29:19:36:08    44.521    -110.385    -2.0
1.7    2008/12/29:19:35:27    44.511    -110.385    -2.4
2.9    2008/12/29:19:29:38    44.513    -110.381    -0.5
2.5    2008/12/29:19:28:55    44.515    -110.381    -0.0
1.8    2008/12/29:19:26:21    44.519    -110.370    -2.0
1.5    2008/12/29:19:24:43    44.520    -110.342    -2.3
3.3    2008/12/29:19:14:49    44.521    -110.369    -1.8
1.2    2008/12/29:18:47:45    44.523    -110.371    -2.1
1.4    2008/12/29:18:40:00    44.533    -110.359    -4.8
1.1    2008/12/29:16:32:12    44.494    -110.360    -2.4
1.6    2008/12/29:16:31:55    44.491    -110.360    -2.3
1.2    2008/12/29:16:15:28    44.480    -110.363    -2.3
1.5    2008/12/29:14:58:37    44.486    -110.354    -1.3
1.7    2008/12/29:10:25:18    44.523    -110.371    -2.4
1.8    2008/12/29:09:14:04    44.527    -110.376    -0.3
2.4    2008/12/29:08:57:55    44.527    -110.378    -0.5
2.4    2008/12/29:08:28:24    44.527    -110.382    -0.4
2.0    2008/12/29:05:30:35    44.517    -110.372    -1.0
2.3    2008/12/29:05:30:04    44.477    -110.349    -6.5
1.7    2008/12/29:05:29:23    44.489    -110.354    -4.2
2.4    2008/12/29:05:23:36    44.516    -110.361    -6.4
1.9    2008/12/29:04:29:18    44.522    -110.385    -1.0
2.8    2008/12/29:04:25:53    44.514    -110.370    -0.1
2.6    2008/12/28:23:57:56    44.521    -110.371    -1.4
2.0    2008/12/28:23:08:25    44.506    -110.377    -1.4
1.8    2008/12/28:22:34:34    44.527    -110.381    -0.5
1.9    2008/12/28:22:32:54    44.534    -110.376    -2.0
2.2    2008/12/28:22:24:20    44.525    -110.375    -0.3
1.5    2008/12/28:21:02:58    44.515    -110.380    -2.1
1.6    2008/12/28:20:56:30    44.505    -110.372    -2.4
1.9    2008/12/28:20:52:56    44.509    -110.385    -2.0
1.5    2008/12/28:20:29:51    44.514    -110.381    -0.1
1.0    2008/12/28:20:29:42    44.523    -110.378    -2.0
1.7    2008/12/28:20:17:28    44.522    -110.377    -2.0
1.9    2008/12/28:20:02:51    44.520    -110.376    -2.1
3.1    2008/12/28:19:55:17    44.511    -110.353    -0.7
1.5    2008/12/28:19:49:31    44.521    -110.372    -2.5
3.0    2008/12/28:19:32:15    44.511    -110.356    -2.7
1.4    2008/12/28:16:32:05    44.514    -110.373    -2.1
1.5    2008/12/28:15:52:38    44.505    -110.374    -2.1
1.3    2008/12/28:15:45:24    44.509    -110.362    -2.4
1.9    2008/12/28:15:43:08    44.500    -110.359    -2.4
2.0    2008/12/28:15:41:24    44.499    -110.361    -2.1
2.8    2008/12/28:15:37:40    44.514    -110.359    -0.0
1.6    2008/12/28:14:39:16    44.498    -110.378    -2.6
1.5    2008/12/28:14:11:26    44.495    -110.359    -2.2
2.0    2008/12/28:14:09:49    44.513    -110.362    -0.1
1.9    2008/12/28:14:05:23    44.519    -110.381    -2.1
1.2    2008/12/28:13:56:46    44.514    -110.364    -0.1
1.1    2008/12/28:13:18:00    44.517    -110.366    -2.1
1.7    2008/12/28:13:08:36    44.496    -110.365    -2.2
1.6    2008/12/28:13:07:52    44.496    -110.365    -2.5
1.7    2008/12/28:12:46:31    44.509    -110.362    -2.1
1.1    2008/12/28:12:42:46    44.468    -110.359    -2.4
1.7    2008/12/28:12:42:06    44.471    -110.367    -7.2
2.0    2008/12/28:12:35:03    44.512    -110.362    -0.4
1.6    2008/12/28:12:19:59    44.515    -110.371    -2.3
2.3    2008/12/28:12:18:53    44.478    -110.365    -1.0
1.8    2008/12/28:12:16:49    44.476    -110.368    -6.3
1.3    2008/12/28:12:00:24    44.475    -110.372    -2.3
1.8    2008/12/28:11:59:50    44.504    -110.365    -2.2
2.1    2008/12/28:11:37:53    44.515    -110.365    -0.0
2.3    2008/12/28:11:02:25    44.484    -110.362    -0.5
2.2    2008/12/28:10:52:06    44.479    -110.361    -6.4
1.5    2008/12/28:10:49:46    44.482    -110.365    -2.4
1.7    2008/12/28:10:46:08    44.510    -110.363    -1.5
1.9    2008/12/28:09:51:10    44.515    -110.371    -0.4
1.9    2008/12/28:09:32:34    44.509    -110.364    -2.1
1.0    2008/12/28:09:30:24    44.514    -110.381    -2.1
1.7    2008/12/28:09:29:57    44.560    -110.475    -3.2
2.2    2008/12/28:09:25:14    44.508    -110.364    -1.9
3.2    2008/12/28:09:23:57    44.511    -110.361    -0.4
1.5    2008/12/28:09:19:26    44.509    -110.358    -2.1
2.7    2008/12/28:09:16:57    44.510    -110.358    -2.6
1.9    2008/12/28:09:14:12    44.489    -110.355    -2.2
1.1    2008/12/28:09:13:54    44.507    -110.371    -0.4
1.9    2008/12/28:09:09:18    44.492    -110.366    -2.4
2.0    2008/12/28:09:07:52    44.500    -110.361    -0.4
2.1    2008/12/28:09:03:18    44.486    -110.356    -2.2
1.3    2008/12/28:08:57:55    44.501    -110.359    -2.1
1.5    2008/12/28:08:41:33    44.509    -110.359    -2.5
2.2    2008/12/28:08:23:41    44.506    -110.369    -0.1
1.1    2008/12/28:08:22:46    44.499    -110.362    -2.5
1.3    2008/12/28:08:22:24    44.499    -110.361    -2.3
1.7    2008/12/28:08:15:33    44.499    -110.364    -2.1
1.0    2008/12/28:08:14:58    44.501    -110.380    -5.3
1.9    2008/12/28:07:16:13    44.513    -110.374    -2.0
2.5    2008/12/28:07:15:18    44.495    -110.359    -0.0
2.5    2008/12/28:06:37:41    44.492    -110.356    -2.6
2.0    2008/12/28:06:37:20    44.497    -110.379    -2.1
1.0    2008/12/28:06:14:58    44.488    -110.357    -2.2
2.2    2008/12/28:06:11:00    44.488    -110.359    -0.4
1.3    2008/12/28:06:07:46    44.493    -110.367    -2.4
1.9    2008/12/28:06:06:27    44.482    -110.370    -2.1
2.4    2008/12/28:06:02:21    44.508    -110.364    -1.0
1.2    2008/12/28:06:01:38    44.497    -110.376    -2.3
2.1    2008/12/28:06:00:46    44.493    -110.377    -2.4
1.5    2008/12/28:05:59:31    44.510    -110.378    -1.8
1.0    2008/12/28:05:59:03    44.498    -110.371    -3.0
1.9    2008/12/28:05:52:01    44.499    -110.362    -2.1
1.8    2008/12/28:05:44:41    44.485    -110.379    -2.2
1.9    2008/12/28:05:28:49    44.498    -110.383    -2.3
1.9    2008/12/28:05:28:05    44.485    -110.371    -2.5
1.8    2008/12/28:05:26:14    44.484    -110.359    -2.0
1.2    2008/12/28:05:26:03    44.470    -110.355    -5.2
1.3    2008/12/28:05:24:39    44.489    -110.359    -4.1
2.8    2008/12/28:05:23:54    44.489    -110.354    -2.5
1.9    2008/12/28:05:21:16    44.480    -110.344    -4.0
1.7    2008/12/28:05:20:10    44.494    -110.379    -2.4
1.6    2008/12/28:05:19:11    44.492    -110.372    -2.2
3.9    2008/12/28:05:15:56    44.502    -110.366    -0.3
2.7    2008/12/28:04:51:03    44.501    -110.355    -2.3
1.8    2008/12/28:04:50:22    44.500    -110.363    -2.4
1.3    2008/12/28:04:40:16    44.497    -110.379    -2.2
1.4    2008/12/28:04:33:44    44.508    -110.369    -2.0
1.6    2008/12/28:03:21:59    44.496    -110.365    -2.5
1.9    2008/12/28:03:01:58    44.504    -110.367    -0.4
1.2    2008/12/28:03:01:33    44.500    -110.370    -2.5
1.2    2008/12/28:02:53:06    44.495    -110.368    -2.3
2.0    2008/12/28:02:52:04    44.497    -110.362    -2.3
2.2    2008/12/28:02:51:21    44.498    -110.362    -0.4
1.5    2008/12/28:02:50:11    44.494    -110.362    -2.5
1.3    2008/12/28:02:49:49    44.498    -110.359    -3.1
1.8    2008/12/28:02:42:06    44.495    -110.362    -2.2
1.9    2008/12/28:02:38:34    44.495    -110.360    -2.4
2.6    2008/12/28:00:08:50    44.493    -110.354    -0.4
3.3    2008/12/27:22:30:03    44.498    -110.358    -4.3
1.5    2008/12/27:22:28:53    44.500    -110.368    -2.1
1.8    2008/12/27:22:27:36    44.499    -110.367    -2.5
1.0    2008/12/27:21:28:06    44.500    -110.362    -3.5
1.6    2008/12/27:21:22:08    44.495    -110.372    -2.6
2.1    2008/12/27:21:08:49    44.496    -110.370    -2.0
3.2    2008/12/27:20:26:27    44.505    -110.364    -2.4
3.5    2008/12/27:20:17:33    44.488    -110.357    -4.1
2.3    2008/12/27:18:56:35    44.484    -110.367    -0.5
3.0    2008/12/27:18:23:07    44.495    -110.364    -2.8
2.0    2008/12/27:18:21:36    44.493    -110.362    -7.2
1.2    2008/12/27:17:01:46    44.484    -110.373    -2.4
2.7    2008/12/27:17:01:07    44.490    -110.366    -1.2
2.6    2008/12/27:16:30:54    44.498    -110.362    -2.5

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