This week's quiz covers CO₂ capture, a free 3D printing toolkit, and a new alkene-cleaving method. Test your knowledge with three questions on last week's top news

COF-999, a stable covalent organic framework, demonstrates exceptional CO₂ capture performance from open air, especially in humid conditions

A novel system combines light-triggered hydrogen release from formic acid with enzymatic hydrogenation, enabling controlled chemical synthesis under mild conditions

BASF receives funding approval for the construction of a heat pump that will use waste heat from steam cracker

Highlights from Chemistry Europe, ACES, and GDCh journals

Overview of the latest issue of Angewandte Chemie

Using raw mixtures of rare earths elements (REE) recovered from e-waste as catalysts to promote the stereoselective synthesis of highly valuable compounds

Method turns aluminum industry waste into valuable green steel, reducing CO₂ emissions and repurposing billions of tons of red mud

Enhanced efficiency and stability of flexible inverted perovskite solar cells achieved using small-molecule additive

Simultaneous depolymerization of polyethylene and polypropylene into a mixture of propene and isobutene