Energy & Green Tech

Colorful films could help buildings, cars keep their cool

The cold blast of an air conditioner can be a welcome relief as temperatures soar, but "A/C" units require large amounts of energy and can leak potent greenhouse gases. Today, scientists report an eco-friendly alternative—a ...

Engineering

Printed 3-D structures based on cellulose nanocrystals

Empa researchers have succeeded in developing an environmentally friendly ink for 3-D printing based on cellulose nanocrystals. This technology can be used to fabricate microstructures with outstanding mechanical properties, ...