See if you can find the 8 differences in each set of images.
Carbon space nebula
Scanning electron microscope image of porous carbon spheres used as a platform for biofuel cell applications.
Nina Heidary, Institute of Chemistry, Technische Universität Berlin, Germany
![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary-alt:20161210132759-22470-mediumThumb-S0883769416002281_figu1g.jpg?pub-status=live)
August 2016 answer key
![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary-alt:20161210132759-64461-mediumThumb-S0883769416002281_figu2g.jpg?pub-status=live)
Nano–peony flower
Zinc–oxide nanoflower structure synthesized by pulsed laser deposition.
Shang–Hsuan Wu, Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan
Answers will be published in the December 2016 issue.
![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary-alt:20161210132759-78847-mediumThumb-S0883769416002281_figu3g.jpg?pub-status=live)