Subscribe now
Spy balloons flying 40km up track drug smugglers on the ground

Spy balloons flying 40km up track drug smugglers on the ground

24 January 2018

The US military are testing uncrewed balloons filled with helium that can keep watch over a small area by catching different winds in the stratosphere
A Stratollite balloon

Spy balloons flying 40km up track drug smugglers on the ground

22 January 2018

The US military are testing uncrewed balloons filled with helium that can keep watch over a small area by catching different winds in the stratosphere

Sign up to our weekly newsletter

Receive a weekly dose of discovery in your inbox. We'll also keep you up to date with New Scientist events and special offers.

Sign up
Piano Exit Overlay Banner Mobile Piano Exit Overlay Banner Desktop