
Artificial seed casing made from wood buries itself when wet
15 February 2023
A seed carrier made from wood screws itself into the ground when exposed to water. It could be useful for projects to replant forests from the air using drones

15 February 2023
A seed carrier made from wood screws itself into the ground when exposed to water. It could be useful for projects to replant forests from the air using drones

13 February 2023
A spate of shootdowns involving balloons and other flying objects over North America comes as the US military is becoming more sensitive to unidentified aerial phenomena

18 January 2023
A drone has revealed information on the animals inhabiting a tree's canopy simply by brushing against branches and collecting loose particles of environmental DNA with its sticky surfaces

6 December 2022
Advanced technology, the war in Ukraine and the threat from climate change are shaping the future of warfare. So 91av invited a group of experts to discuss the emerging issues

2 November 2022
A retrofitted Black Hawk helicopter flew autonomously between mountains to deliver blood supplies in a simulated mission. It also picked up a simulated medical casualty

1 November 2022
Ukraine has used drones in innovative ways throughout the Russia-Ukraine war, and may now be preparing to deploy machines capable of finding and attacking targets without direct human control

5 October 2022
Footage showing protected Scottish waters raked clean by scallop dredgers shows that marine protected areas are "paper parks", say campaigners

28 September 2022
These arresting images of industrial developments in Senegal, South Africa and Namibia were taken by Edward Burtynsky, who spent four years capturing African landscapes using aerial photography

27 September 2022
Nord Stream 1 and Nord Stream 2, key gas pipelines between Russia and Europe, have sprung large leaks within hours of each other, sparking fears of deliberate sabotage

21 September 2022
Bit by bit, drones can print structures made of foam and cement. The technique could transform future construction sites and post-disaster reconstruction