Evolution Prothero was one of the earliest paleontologists to use the concept of
palaeomagnetism in the study of continental rocks. Palaeomagnetism uses the microscopic iron within sedimentary rock to read the alignment of the magnetic field and correlate that with the known history of the polarity reversals of the Earth's magnetic field. The magnetic reversals are precisely dated and consistent worldwide which allows these rocks to be studied in climate science and evolution. In addition to his research in magnetostratigraphy, another area of Prothero's research is the evolution of hoofed mammals, especially rhinos, camels, peccaries, and horses. Prothero's work on documenting evolutionary history of fossil vertebrates was cited by
Richard Dawkins in his book
The Greatest Show on Earth: the Evidence of Evolution. Skeptic Society founder
Michael Shermer called Prothero's 2007 book,
Evolution: What the Fossils Say and Why It Matters, "the best book ever produced on the subject." He has also been featured as a scientific consultant and was interviewed on several television documentaries, including the
Are Rhinos Dinos? episode of TLC's
Paleoworld, the History Channel's
Prehistoric Monsters Revealed, the episodes of National Geographic's Prehistoric Predators covering the
entelodon and
hyaenodon, the series
Walking with Prehistoric Beasts on BBC, and the
amphicyon or
Bear Dog episode of
Monsters Resurrected. In October 2012, Prothero appeared in his capacity as a paleontologist on
Conspiracy Road Trip, a BBC television documentary in which five individuals who self-identified as Creationists participated in a road trip along the western coast of the United States, meeting with various experts on the topic, exchanging views and questions with people holding differing views. at TAM 2013
Cryptozoology Prothero has frequently written about the topic of
cryptozoology, a
pseudoscience and
subculture, which he categorizes along with
Holocaust denial and
UFO abductions claims as aspects of American culture that are "clearly baloney". Prothero's 2013 book with
Daniel Loxton,
Abominable Science: The Origin of Yeti, Nessie, and Other Cryptids discusses the subculture in depth. In a review by
Adrienne Mayor of Stanford University, she describes the book as "An entertaining, educational, passionate, and valuable handbook for readers interested getting a scientific perspective on the field of cryptozoology. With marvelous artwork and deeply researched histories of the various creatures, this is an impressive and authoritative book."
Anthropogenic global warming Prothero looks at the evidence regarding global warming and the role humans have had on it. In his book
Greenhouse of the Dinosaurs, Prothero states "geologists and paleoclimatologists know a lot about past greenhouse worlds, and the icehouse planet that has existed for the past 33 million years. We have a good understanding of how and why the Antarctic ice sheet first appeared at that time, and how the Arctic froze over about 3.5 million years ago, beginning the 24 glacial and interglacial episodes of the 'Ice Ages' that have occurred since then." In his article in eSkeptic, Prothero details carbon dioxide increases, melting polar icecaps, melting glaciers and sea level rise as some of the more important areas that point to anthropogenic global warming. He also goes into details to outline
climate change deniers' arguments and rebuttals to those arguments and finally talks about why people deny climate change.
Skepticism Prothero grew up in a
Presbyterian household, but eventually became an
atheist. He became involved in the skeptical movement in the mid-1990s, when
Michael Shermer invited him to join the editorial board of
The Skeptics Society. His first appearance as a panelist at
The Amazing Meeting was in 2010. This realization led him to research and author "Reality Check: How Science Deniers Threaten Our Future" in 2013 as he explained during an interview on the podcast
Skepticality: In 2015, Prothero was elected a fellow of the
Committee for Skeptical Inquiry. ==Selected publications==