The chemistry prize this year was shared by Carolyn R.Bertozzi, K. Barry Sharpless, and Morten Meldal.
The winners of the Royal Swedish Academy of Sciences were announced on Wednesday.
Benjamin List and David W.C. MacMillan were awarded the prize last year for their discovery of a new way to build molecule that is already benefiting humankind greatly.
The medicine prize was given to a scientist who unlocked the secrets of Neanderthal genetics. The physicists won the prize for showing that tiny particles can remain in contact even when separated.
On Wednesday and Thursday, chemistry and literature will be covered. The economics award and the peace prize will be announced in October.