Richard Eimer Lenski (born August 13, 1956) is an American

evolutionary biologist Evolutionary biology is the subfield of biology that studies the evolutionary processes (natural selection, common descent, speciation) that produced the diversity of life on Earth. It is also defined as the study of the history of life for ...

, a Hannah Distinguished Professor of

Microbial Ecology Microbial ecology (or environmental microbiology) is the ecology of microorganisms: their relationship with one another and with their environment. It concerns the three major domains of life—Eukaryota, Archaea, and Bacteria—as well as viru ...

Michigan State University Michigan State University (Michigan State, MSU) is a public land-grant research university in East Lansing, Michigan. It was founded in 1855 as the Agricultural College of the State of Michigan, the first of its kind in the United States. It ...

. He is a member of the

National Academy of Sciences The National Academy of Sciences (NAS) is a United States nonprofit, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the Nat ...

and a MacArthur fellow. Lenski is best known for his still ongoing -year-old long-term ''E. coli'' evolution experiment, which has been instrumental in understanding the core processes of evolution, including

mutation rate In genetics, the mutation rate is the frequency of new mutations in a single gene or organism over time. Mutation rates are not constant and are not limited to a single type of mutation; there are many different types of mutations. Mutation rates ...

s, clonal interference,

antibiotic resistance Antimicrobial resistance (AMR) occurs when microbes evolve mechanisms that protect them from the effects of antimicrobials. All classes of microbes can evolve resistance. Fungi evolve antifungal resistance. Viruses evolve antiviral resistance. ...

, the

evolution Evolution is change in the heritable characteristics of biological populations over successive generations. These characteristics are the expressions of genes, which are passed on from parent to offspring during reproduction. Variation ...

of novel traits, and

speciation Speciation is the evolutionary process by which populations evolve to become distinct species. The biologist Orator F. Cook coined the term in 1906 for cladogenesis, the splitting of lineages, as opposed to anagenesis, phyletic evolution withi ...

. He is also well known for his pioneering work in studying evolution digitally using

self-replicating Self-replication is any behavior of a dynamical system that yields construction of an identical or similar copy of itself. Biological cells, given suitable environments, reproduce by cell division. During cell division, DNA is replicated and ca ...

organisms called

Avida Avida is an artificial life software platform to study the evolutionary biology of self-replicating and evolving computer programs ( digital organisms). Avida is under active development by Charles Ofria's Digital Evolution Lab at Michigan Stat ...

Early life

Richard E. Lenski is the son of sociologist

Gerhard Lenski Gerhard Emmanuel "Gerry" Lenski, Jr. (August 13, 1924 – December 7, 2015) was an American sociologist known for contributions to the sociology of religion, social inequality, and introducing the ecological-evolutionary theory. He spent much of ...

and poet Jean Lenski ( Cappelmann). He is also the great-nephew of children's author

Lois Lenski Lois Lenore Lenski Covey (October 14, 1893 – September 11, 1974) was a Newbery Medal-winning author and illustrator of picture books and children's literature. Beginning in 1927 with her first books, ''Skipping Village'' and ''Jack Horner's Pie: ...

and the great-grandson of

Lutheran Lutheranism is one of the largest branches of Protestantism, identifying primarily with the theology of Martin Luther, the 16th-century German monk and reformer whose efforts to reform the theology and practice of the Catholic Church launched ...

commentator Richard C. H. Lenski. He earned his BA from

Oberlin College Oberlin College is a private liberal arts college and conservatory of music in Oberlin, Ohio. It is the oldest coeducational liberal arts college in the United States and the second oldest continuously operating coeducational institute of highe ...

in 1976, and his PhD from the

University of North Carolina The University of North Carolina is the multi-campus public university system for the state of North Carolina. Overseeing the state's 16 public universities and the NC School of Science and Mathematics, it is commonly referred to as the UNC S ...

in 1982.

Career

Lenski won a

Guggenheim Fellowship Guggenheim Fellowships are grants that have been awarded annually since by the John Simon Guggenheim Memorial Foundation to those "who have demonstrated exceptional capacity for productive scholarship or exceptional creative ability in the art ...

1991 File:1991 Events Collage.png, From left, clockwise: Boris Yeltsin, elected as Russia's first president, waves the new flag of Russia after the 1991 Soviet coup d'état attempt, orchestrated by Soviet hardliners; Mount Pinatubo erupts in the Phi ...

and a

MacArthur Fellowship The MacArthur Fellows Program, also known as the MacArthur Fellowship and commonly but unofficially known as the "Genius Grant", is a prize awarded annually by the John D. and Catherine T. MacArthur Foundation typically to between 20 and 30 indi ...

in 1996, and in 2006 he was elected to the

United States National Academy of Sciences The National Academy of Sciences (NAS) is a United States nonprofit, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the N ...

. Lenski is a

fellow A fellow is a concept whose exact meaning depends on context. In learned or professional societies, it refers to a privileged member who is specially elected in recognition of their work and achievements. Within the context of higher education ...

at the

American Academy of Microbiology The American Society for Microbiology (ASM), originally the Society of American Bacteriologists, is a professional organization for scientists who study viruses, bacteria, fungi, algae, and protozoa as well as other aspects of microbiology. It wa ...

and the

American Academy of Arts and Sciences The American Academy of Arts and Sciences (abbreviation: AAA&S) is one of the oldest learned societies in the United States. It was founded in 1780 during the American Revolution by John Adams, John Hancock, James Bowdoin, Andrew Oliver, a ...

and holds the office Hannah Distinguished Professor of

microbial ecology Microbial ecology (or environmental microbiology) is the ecology of microorganisms: their relationship with one another and with their environment. It concerns the three major domains of life—Eukaryota, Archaea, and Bacteria—as well as viru ...

. On February 17, 2010, he co-founded the NSF Science and Technology Center for the Study of Evolution in Action, known as the

BEACON Center The BEACON Center for the Study of Evolution in Action is a science and technology center in the United States, focused on experimental and applied research on evolutionary dynamics, sponsored by the National Science Foundation. He was elected to the

American Philosophical Society The American Philosophical Society (APS), founded in 1743 in Philadelphia, is a scholarly organization that promotes knowledge in the sciences and humanities through research, professional meetings, publications, library resources, and communit ...

in 2018. Lenski was the recipient of the 2021 Lifetime Achievement Award from the

Society for the Study of Evolution The Society for the Study of Evolution is a professional organization of evolutionary biologists. It was formed in the United States in 1946 to promote evolution and the integration of various fields of science concerned with evolution and to organ ...

E. coli experiment

The ''E. coli'' long-term evolution experiment is an ongoing study in

experimental evolution Experimental evolution is the use of laboratory experiments or controlled field manipulations to explore evolutionary dynamics. Evolution may be observed in the laboratory as individuals/populations adapt to new environmental conditions by natura ...

led by Richard Lenski that has been tracking genetic changes in 12 initially identical populations of asexual ''

Escherichia coli ''Escherichia coli'' (),Wells, J. C. (2000) Longman Pronunciation Dictionary. Harlow ngland Pearson Education Ltd. also known as ''E. coli'' (), is a Gram-negative, facultative anaerobic, rod-shaped, coliform bacterium of the genus '' Esc ...

'' bacteria since 24 February 1988. The populations reached the milestone of 50,000 generations . Since the experiment's inception, Lenski and his colleagues have reported a wide array of genetic changes; some evolutionary

adaptation In biology, adaptation has three related meanings. Firstly, it is the dynamic evolutionary process of natural selection that fits organisms to their environment, enhancing their evolutionary fitness. Secondly, it is a state reached by the po ...

s have occurred in all 12 populations, while others have only appeared in one or a few populations. One particularly striking adaptation was the evolution of a strain of ''E. coli'' that was able to use

citrate Citric acid is an organic compound with the chemical formula HOC(CO2H)(CH2CO2H)2. It is a colorless weak organic acid. It occurs naturally in citrus fruits. In biochemistry, it is an intermediate in the citric acid cycle, which occurs in the ...

as a carbon source in an aerobic environment.

Avida simulation

Richard Lenski,

Charles Ofria Dr. Charles A. Ofria is a Professor in the Department of Computer Science and Engineering at Michigan State University, the director of the Digital Evolution (DEvo) Lab there, and Director of the BEACON Center for the Study of Evolution in Action ...

, et al. at

developed an

artificial life Artificial life (often abbreviated ALife or A-Life) is a field of study wherein researchers examine systems related to natural life, its processes, and its evolution, through the use of simulations with computer models, robotics, and biochemistry ...

computer program with the ability to detail the evolution of complex systems. The system uses values set to determine random mutations and allows for the effect of natural selection to conserve beneficial traits. The program was dubbed Avida and starts with an artificial petri dish where organisms reproduce and perform mathematical calculations to acquire rewards of more computer time for replication. The program randomly adds mutations to copies of the artificial organisms to allow for natural selection. As the artificial life reproduced, different lines adapted and evolved depending on their set environments. The beneficial side to the program is that it parallels that of real life at rapid speeds.

Media

In August 2013, having been inspired by a presentation by Titus Brown on the role of social media in science, Lenski began blogging a
Telliamed Revisited
and tweeting a
@RELenski
Lenski's research has received considerable attention, including lengthy discussion in

Carl Zimmer Carl Zimmer (born 1966) is a popular science writer, blogger, columnist, and journalist who specializes in the topics of evolution, parasites, and heredity. The author of many books, he contributes science essays to publications such as ''The ...

's book on ''E. coli'', ''Microcosm'', and in

Richard Dawkins Richard Dawkins (born 26 March 1941) is a British evolutionary biologist and author. He is an emeritus fellow of New College, Oxford and was Professor for Public Understanding of Science in the University of Oxford from 1995 to 2008. An ...

' book on the evidence for evolution, '' The Greatest Show on Earth''. Included in Dawkins' discussion was a description of the dialog Lenski had in 2008 with Andrew Schlafly, creator of

Conservapedia Conservapedia ( ) is an English-language, wiki-based, online encyclopedia written from a self-described American conservative and fundamentalist Christian point of view. The website was established in 2006 by American homeschool teacher and a ...

, which Schlafly initiated as a reaction to reports of Lenski's description of the evolution of aerobic citrate usage in one of the long-term evolution experiment populations. These same findings were later cited by the

creationist Creationism is the religious belief that nature, and aspects such as the universe, Earth, life, and humans, originated with supernatural acts of divine creation. Gunn 2004, p. 9, "The ''Concise Oxford Dictionary'' says that creationism is 'th ...

Ken Ham Kenneth Alfred Ham (born 20 October 1951) is an Australian Christian fundamentalist, young Earth creationist and apologist, living in the United States. He is the founder, CEO, and former president of Answers in Genesis (AiG), a Christian apolo ...

in a

debate Debate is a process that involves formal discourse on a particular topic, often including a moderator and audience. In a debate, arguments are put forward for often opposing viewpoints. Debates have historically occurred in public meetings, a ...

over

with

Bill Nye William Sanford Nye (born November 27, 1955), popularly known as Bill Nye the Science Guy, is an American mechanical engineer, science communicator, and television presenter. He is best known as the host of the science television show ''Bill ...

. Lenski strongly criticized Ham's citation of his work and the conclusions Ham drew from it.https://telliamedrevisited.wordpress.com/2014/02/05/ham-on-nye-debate-follow-up-1/, https://telliamedrevisited.wordpress.com/2014/02/06/ham-on-nye-debate-follow-up-2/, https://telliamedrevisited.wordpress.com/2014/02/07/zachary-blount-on-ham-on-nye-debate-follow-up-3/

References

External links

''E. coli'' Long-term Experimental evolution site

BEACON Center for the Study of Evolution in Action

The Loom : A New Step In Evolution
{{DEFAULTSORT:Lenski, Richard 1956 births Evolutionary biologists Living people MacArthur Fellows Members of the United States National Academy of Sciences Michigan State University faculty Oberlin College alumni University of North Carolina at Chapel Hill alumni Phage workers 21st-century American biologists Santa Fe Institute people Fellows of the Ecological Society of America Members of the American Philosophical Society Researchers of artificial life