Search | 91av

Found 310 results for drones

The US Navy has a mechanical battery that could power laser weapons

19 March 2021

A small mechanical battery based on spinning flywheels can deliver short bursts of high power, which the US Navy could use for energy weapons or railguns

Aircraft contrails are a climate menace. Can we rid the sky of them?

17 March 2021

The wispy cloud trails left by aircraft cause more warming than the carbon emissions from their fuel. Now there might be a simple way to stop them forming

Eagle-inspired robot flies by flapping its feather-covered wings

3 March 2021

A robot that looks like a bird, flaps its wings like a bird and flies like a bird could be used as a stealthy, camouflaged drone

How to spend a trillion dollars to fix climate change and end poverty

24 February 2021

Let’s imagine you have inherited a fortune and want to solve the world’s most pressing problems. Here’s the best way to spend your money to make a difference to climate change, disease and poverty

The US Army is building the most powerful laser weapon in the world

19 February 2021

The US Army is building a laser blaster over a million times more powerful than any used before. It is intended to take down fast-moving targets like missiles and drones

Flying robots suggest bees can’t rely on instinct to land on flowers

1 February 2021

We thought bees relied on hardwired instinct to land, but a study involving flying robots suggests that bees may also need to learn about specific surface textures before they can touch down

How you can help with penguin research by browsing images at home

19 January 2021

Many penguin populations are under threat but you can help researchers keep an eye on them through a citizen science project called Penguin Watch

Northern white rhino Fatu (right) and southern white rhino Tauwo (left) are fed by a caretaker in Ol Pejeta Conservancy in Kenya

Embryos from the last two northern white rhinos set to be implanted

14 January 2021

Fertilised eggs from northern white rhinos are set to be implanted in surrogates this year, with the hope of producing offspring

Chinstrap penguin population halved at key Antarctic breeding area

8 December 2020

The population of Chinstrap penguins on Elephant Island, a core breeding location off the coast of Antarctica, has declined by 57 per cent in the last 50 years

Military robots perform worse when humans won't stop interrupting them

4 December 2020

A US project has found that AI-controlled military robots perform worse when humans interrupt them – but letting the robots operate alone raises serious ethical questions