Nanoparticles are extremely tiny particles, with external dimensions smaller than 100 nanometres (0.0001 of a millimetre). Here’s what we know about nanotechnology in food.
Phosphorene nanoribbons.
Oliver Payton/University of Bristol
Nanotechnology and materials are the source of countless innovations, but we don’t accurately know how they are affecting humans and the environment.
A man walks through a greenhouse in northeastern Uganda where sustainable agriculture techniques such as drought-resistant crops and tree planting are taught, Oct. 19, 2017.
AP Photo/Adelle Kalakouti
After declining for nearly a decade, the number of hungry people in the world is growing again. Climate change, which is disrupting weather patterns that farmers rely on, is a major cause.
Nanomedicine could scupper the need for TB patients to take multiple daily tablets with toxic side effects.
Daniel Irungu/EPA
Many socks, towels and other textiles are treated with silver nanoparticles to kill germs and odors. When the silver washes out, it can pollute waterways. Two chemists propose a way to collect it from wastewater.
Coating paper with an inexpensive thin film can allow users to print and erase a physical page as many as 80 times. That reduces both the cost and the environmental effects of paper use.
These mini lightning bolts have been known for millennia. Understanding static electricity at the atomic level opens the door for new technologies – as well as ways to cut down on the tiny zaps.
Easy to transport and store, skin patches could soon replace needles for vaccination.
WorldBankPhotos/flickr