That's amazing! Thanks to everyone involved for stepping up to produce hand sanitizer, and for documenting all the challenges and bottlenecks.
Great solution to deal with a problem that many cities are facing!
Has Chengdu air quality changed a lot in the past few months during lockdown? Here in London researchers have measured cleaner air as soon as the lockdown started!
This was so interesting! I had no idea the whisky market was so prone to fraud.
It's so hard to pick a favourite, but one of the ones that always stands out for me is Germanium. When Mendeleev first created the periodic table, there were a few gaps. He predicted that there should be elements in those positions, even though it hadn't been discovered yet. Of these four, Germanium is the one that I remember learning about in this context in school. It was discovered a few decades after Mendeleev predicted it, and really showed how well the table worked. It wasn't just a random list - it could predict the properties of undiscovered elements! This was one of the stories that inspired me to study chemistry for my undergrad degree.