What is this?

Guess…

 False colour picture of a small piece of moon rock Schematic illustration of bone tissue Electron microscopy-based image of a coated tin oxide particle

Closing date: September 30th, 2020

and win!

Pure Green Energy

A Solar charger with 2 USB ports for powerbanks, mobiles, tablets,… Compact, light and high charging speed.

NOTE: Your e-mail address will only be used to run this competition and will be deleted after the winner has been determined. The winner will be drawn from all participants providing the correct answer. There is no entitlement to a prize.