What is cloud seeding and could it end the drought in Iran?
18 November 2025
Facing its worst drought in decades, Iran is attempting to stimulate rain by spreading seeding agents in clouds, but the technique is likely to have modest benefits at best
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Premium
Found 513 results for drones
Mysterious holes in Andean mountain may be an Inca spreadsheet
10 November 2025
Thousands of holes arranged in a snake-like pattern on Monte Sierpe in Peru could have been a monumental accounting device for trade and tax
Advanced quantum network could be a prototype for the quantum internet
4 November 2025
Building a working quantum internet would require overcoming a host of technical challenges, but researchers who have built one of the most advanced quantum networks to date say they think it is possible
Stealth radio hides signal in background noise to protect drone pilots
15 September 2025
As drones have risen to prominence on the battlefield, so too has electronic warfare, in which adversaries attempt to mask, jam or trace radio signals. Now, a new stealthy radio device could help give people the edge, letting them fly drones without...
Solar-powered ambush drones can wait for targets like land mines
29 July 2025
Russian ambush drones have been seen in Ukraine fitted with cheap solar panels, which enable them to lurk indefinitely, waiting for a target to come near
Solar drone with wingspan wider than jumbo jet could fly for months
25 July 2025
A pioneering solar-powered drone aircraft operated by Skydweller Aero will be used for maritime surveillance
Why bizarre Cold War hoverboats are making a comeback
10 July 2025
Sea-skimming crafts – which fly just above the water – were once considered Cold War relics of a failed Soviet experiment. Now, China and the US are resurrecting the technology as a possible Pacific conflict looms
The bold plan to save a vital ocean current with giant parachutes
27 June 2025
Large sea anchors could be used to drag water under a bold plan to keep the Atlantic Meridional Overturning Circulation moving – but some experts are sceptical
Leonardo da Vinci's 'helicopter' design could make drones quieter
24 June 2025
A simulation of the "aerial screw" designed by Leonardo da Vinci in 1480 suggests it would use less power than modern drone rotors to generate the same lift, and make less noise too
Orcas scrub each other clean with bits of kelp
23 June 2025
Drone footage has captured killer whales breaking off stalks of kelp and rubbing the pieces on other orcas, a rare case of tool use in marine animals
