June 17, 2015 | Luke

It has been hot and sticky in London recently, but I'm still surprised to hear we can get energy from the moisture in the air.

Researchers have used bacterial spores that expand when moist to create 'artificial muscles' which expand and contract. They powered an LED with this motion. It's a very small amount of energy, but humidity differences are all around us. Maybe they'll find a way to scale it up?

I think it's a great approach to finding new energy sources. Sometimes the answers are going to be found in surprising places.

News

368 Likes | No comments

Do you like this story?

Poll

Is bacteria power the future?




Moisture on a window

The bacteria used, Bacillus subtilis, are found in soil and the human gut.

Enlarge

Image: Flickr/Virginia Sanderson

Share your comment

Write as if you were talking to a friend (and maybe in front of your mother!).

Keep it classy, keep it clean and keep your temper.

Comments may be displayed in the gallery as well as on the website - check out our Community Guidelines for more info.

Tags

Popular Posts