Paper packaging is considered the better choice. It is more sustainable, recyclable and environmentally friendly than plastic. But they still have one problem: they need adhesives or layers of plastic to seal them, which makes recycling more difficult. Researchers in Dresden want to change this - with a laser that creates its own adhesive in the paper.
"Have you ever seen a monkey with a toothbrush?" asks Professor Johan Wölber from Dresden. He is devoting himself to a new discipline - nutritional dentistry. A monkey hardly knows tooth decay.
| more
