In my school days, pure carbon came in two allotropes, graphite and diamond. By now there are dozens of them, or maybe even an infinite number as you could stitch together any number of fullerenes and polyynes to produce a new molecule consisting only of carbon.
But even fundamentally new types of carbon materials keep popping up, so I wrote a feature on the latest patterns which is out now:
Chemistry & Industry Volume 85, Issue 12, December 2021, Pages 22-25
Wiley Online Library (paywalled)
SCI (coming soon)
I'm loving the design of the first double page spread (although I'm not sure about the title).
In the same issue, on page 39, there's my long essay review of the book
Ethics of chemistry
by Joachim Schummer, Tom Børsen, eds.
which is much better than the previous book on chemical ethics that I reviewed. (I may have forgotten to publicise that review, as the book was really not worth promoting.)