by dthal on 4/15/18, 5:45 AM with 12 comments
by mikeash on 4/15/18, 11:11 PM
by skookumchuck on 4/16/18, 7:38 AM
I find this peculiar. Hydrogen balloons were used for surveillance in the Civil War, 40 years earlier. It would have been easy to attach a camera to a small hydrogen balloon, with a clockwork device to puncture the balloon to bring it down in a reasonable distance.
by aaronbrethorst on 4/16/18, 1:12 AM
by Robotbeat on 4/16/18, 2:13 AM