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Liquid robot can split into tiny droplets and reform into a blob

16 September 2022

A robot made from magnetic fluid can be made smaller, thinner, or directed to break up with special magnets, which could be useful for delivering drugs into the body

Robot made of sticky tape and metal powder could crawl on your organs

15 July 2022

Tiny robots made of metallic powder stuck to plastic tape and controlled by magnetic fields could one day crawl inside internal organs and repair injuries

Earth’s magnetosphere replicated in miniature using lasers and magnets

12 April 2022

The first 3D model of Earth’s magnetosphere could help us better understand how satellites cope with space weather

Strongest ever magnetic field fails to make predicted exotic particles

2 February 2022

Researchers have used the strongest magnetic field ever measured to search for exotic particles called magnetic monopoles, but they came up empty

Does magnetism decay over time?

15 July 2020

Does the strength of magnetism of bar magnets and magnetic ores decay over time, like radioactivity does?

Electromagnetism

4 June 2020

The fundamental force responsible for electricity, magnetism, stable atoms and chemistry.

This week’s new questions

3 June 2020

Do magnets lose their strength over time, and why do some birds walk they way they do? Send us your thoughts and we'll publish our favourites

Our brains might sense Earth's magnetic field just like birds do

18 March 2019

Some magnetic field alterations cause changes in our brain activity, suggesting a magnetic sense could have played a role in the nomadic lives of our hunter-gatherer ancestors

There’s a weird new type of magnet that shouldn't be able to exist

7 February 2019

Take a form of uranium that shouldn’t be magnetic, mix it with antimony and cool it down, and you get a new kind of magnet that could speed up computers