Luis Campos

Dialectics Denied: Muller, Lysenkoism, and the Fate of Chromosomal Mutation

This chapter explores the decline of “chromosomal mutation” in both the US and USSR as an important but heretofore unremarked casualty of Lysenkoism. I explore how chromosomal mutations came under fire in both the US and the USSR, despite having previously been accepted as evolutionarily significant types of mutation, as a result of the competing genetic geopolitics of Lysenkoism. As Lysenkoists focused on the phenotype, American geneticists focused on the genotype, and the focus on chromosomes and a level of chromosomal mutation was lost.

Tweets as Sources in the History of Contemporary Science

What was once the ultimate in the fleeting world of ephemera, the tweet, is now being archived by the most august library in the land. The Library of Congress is archiving about 500 million tweets per day, up from 140 million per day just two years ago. As Twitter processes 58 million tweets per day, this is still only about ten times the number of tweets that continue to be tweeted every day. But as of January 2013, the Library of Congress had archived a total of 170 billion tweets in 133.2 terabytes. A more extensive textual repository of ephemera related to today’s world – a treasure trove for Twitterstorians – can scarcely be imagined.

Tweets as Sources in the History of Contemporary ScienceSocial Media Trends in Medical History

What was once the ultimate in the fleeting world of ephemera, the tweet, is now being archived by the most august library in the land. The Library of Congress is archiving about 500 million tweets per day, up from 140 million per day just two years ago. As Twitter processes 58 million tweets per day, this is still only about ten times the number of tweets that continue to be tweeted every day. But as of January 2013, the Library of Congress had archived a total of 170 billion tweets in 133.2 terabytes. A more extensive textual repository of ephemera related to today’s world – a treasure trove for Twitterstorians – can scarcely be imagined.