One of the main challenges for manned Mars expeditions is the need for sufficient oxygen and fuel
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Water Electrolyzer for Mars
![The Content you Liked Best in 2020](https://www.chemistryviews.org/wp-content/uploads/legacy/common/images/thumbnails/source/176cd3fb561.png)
The Content you Liked Best in 2020
Take a look at ChemistryViews' most viewed content published throughout the year 2020
![New EuChemS President](https://www.chemistryviews.org/wp-content/uploads/legacy/common/images/thumbnails/source/16e7f98e39c.png)
New EuChemS President
Floris Rutjes, Radboud University, the Netherlands, has been elected president of EuChemS
![New GÖCH President](https://www.chemistryviews.org/wp-content/uploads/legacy/common/images/thumbnails/source/175b2ec5837.png)
New GÖCH President
The Austrian Chemical Society (GÖCH) elected Peter Gärtner, TU Wien, as their new president
![The Chemistry of Fireworks](https://www.chemistryviews.org/wp-content/uploads/legacy/common/images/thumbnails/source/175b97447ab.png)
The Chemistry of Fireworks
The video shows what happens during fireworks and how chemistry is involved
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Guess the Chemist – Spices Special (4)
Can you guess the chemist? – The person has something to do with spices in the broadest sense
![Print Your Own Mars Rover](https://www.chemistryviews.org/wp-content/uploads/legacy/common/images/thumbnails/source/176722b6fd3.png)
Print Your Own Mars Rover
ExoMy is a fully 3D printed rover inspired by ExoMars, developed by the European Space Agency (ESA)
![Inverted Fluorescence](https://www.chemistryviews.org/wp-content/uploads/legacy/common/images/thumbnails/source/176766b8f0d.png)
Inverted Fluorescence
Discovery of chromophores that emit light in the ultraviolet region when excited with visible light
![The Chemistry of the Candle Flame](https://www.chemistryviews.org/wp-content/uploads/legacy/common/images/thumbnails/source/175d15340e6.png)
The Chemistry of the Candle Flame
What happens chemically when a candle is burned?
![Most Accessed Articles: November 2020](https://www.chemistryviews.org/wp-content/uploads/legacy/common/images/thumbnails/source/1765211379d.png)
Most Accessed Articles: November 2020
Highlights from Chemistry Europe, ACES, and GDCh journals