Editing 1949 in science (section)

==Chemistry==
* [[Radiocarbon dating]] technique discovered by [[Willard Libby]] and his colleagues at the [[University of Chicago]]—work for which Libby will receive the [[Nobel Prize]] in 1960.
* A group including [[Dorothy Hodgkin]] publish the three-dimensional molecular structure of [[penicillin]], demonstrating that it contains a [[Beta-lactam|β-lactam]] ring.<ref>{{cite book|author1=Crowfoot, D. |author2=Bunn, Charles W. |author3=Rogers-Low, Barbara W. |author4=Turner-Jones, Annette |year=1949|chapter=X-ray crystallographic investigation of the structure of penicillin|editor1=Clarke, H. T. |editor2=Johnson, J. R. |editor3=Robinson, R. |title=Chemistry of Penicillin|publisher=Princeton University Press|pages=310–367}}</ref><ref>{{cite journal|first=Jenny P.|last=Glusker|title=Dorothy Crowfoot Hodgkin (1910-1994)|journal=[[Protein Science]]|year=1994|volume=3|issue=12|pages=2465–2469|doi=10.1002/pro.5560031233|pmid=7757003|pmc=2142778}}</ref>