Aleksandar Kondinski, KU Leuven, Belgium, uses commercially available toys to create complex chemical structures

Constructing Models for Teaching and Learning

What is in a Lipstick?
Learn from this picture which ingredients are in a lipstick and why they are added

Pyrethrum: History of a Bio-Insecticide – Part 6
How pyrethrins kill insects and the variety of modern pyrethroids

Joining the IYPT2019 Celebrations
Experiences around a radio program on the elements and a large periodic table at Universitat Jaume I, Castellón, Spain

Tattoos – The Skin as a Canvas
What are tattoo inks and where do the colors come from? Where in the skin is the tattoo?

New Year’s Eve Chemistry
Impress your friends on the New Year's Eve party with these chemistry-based facts

The Science Behind Candles
What you need to know about the flame of a candle

The Molecular Marvels of Captain America
The hypothetical (bio-)chemistry behind the transformation of a frail soldier into a comic book superhero

Pyrethrum: History of a Bio-Insecticide – Part 3
Comparing the insecticidal activity of DDT and pyrethrins

Searching for Christmas Presents?
Editors recommend science-themed holiday gift ideas