Why was the beer purity law or Reinheitsgebot introduced 500 years ago?

Beer Purity Law

Backbone-Degradable Polymers
Biodegradable polymers made by chemical vapor deposition (CVD)

Chemistry Advent Calendar 2016
Three chemistry highlights per week – check what is behind today's door

Light Switch in Autumn Leaves
Yellow chlorophyll decomposition products are environment-responsive photoswitches

Why Do Turkeys Have White and Dark Meat?
What's the difference between breast and drumstick in your thanksgiving roast?

A Flair for Methane Valorization
Selectively converting methane into carbon monoxide

ChemMedChem 10th Anniversary Contest (1) closed
Can you guess the drug from its structure? Send us your answer and win a book!

Falling Walls 2016
Innovations, inventions, and groundbreaking ideas from young researchers and renowned scientists

Implantable Catalyst Against Cancer
Biocompatible heterogeneous copper catalyst for click chemistry in living organisms

Safer Pyrotechnic Fog
Phosphorus nitride could be used as a friction-stable, fast-burning, and very effective pyrotechnic obscurant