Paleohistology (WHY TEETH EXIST) with Yara Haridy - Ologies with Alie Ward Recap

Podcast: Ologies with Alie Ward

Published: 2026-01-21

Duration: 1 hr 24 min

Summary

In this episode, Alie Ward chats with Dr. Yara Haridy about paleohistology, the study of ancient tissues, particularly focusing on the origins and structures of teeth. Through engaging anecdotes and scientific insights, Haridy uncovers the fascinating history and function of teeth in prehistoric species.

What Happened

Alie Ward introduces Dr. Yara Haridy, a paleontologist and science communicator, who has a unique background that includes growing up in Morocco and Egypt before moving to Canada. Haridy shares her academic journey, explaining how she transitioned from pre-med studies to paleontology, driven by her fascination with anatomy and ancient life. The conversation dives into the concept of paleohistology, which is essentially the study of ancient tissues, including the different components that make up teeth like enamel and dentine.

As the episode progresses, Haridy elaborates on the techniques used in paleohistology, such as examining ancient fossils under a microscope to understand the tissues that have survived over millions of years. This method allows scientists to ask new questions about prehistoric life and the evolution of anatomy. The discussion also touches on the role of social media in connecting scientists and fostering collaborations, highlighting the supportive community that can emerge from platforms like Twitter.

Key Insights

• Paleohistology examines ancient tissues, providing insights into prehistoric anatomy.
• Teeth are composed of several tissues, including enamel and dentine, which are critical for understanding evolutionary biology.
• Social media has played a significant role in building a supportive community among scientists.
• The transition from traditional education paths to niche fields like paleontology can be driven by personal interests and experiences.

Key Questions Answered

What is paleohistology?

Paleohistology is the study of ancient tissues, derived from the Greek words for old and tissues. Dr. Haridy emphasizes that this field allows scientists to examine preserved tissues in fossils, providing a glimpse into the anatomy of ancient organisms. This area of study is crucial for understanding how various species, including those that lived millions of years ago, developed and evolved over time.

How are teeth structured?

Teeth are composed of different tissues such as enamel and dentine, which are critical for their function. Dr. Haridy explains that while people often think of teeth as singular entities, they are actually made up of these distinct materials that serve various roles. Understanding the structure of teeth can help paleontologists learn about the diets and lifestyles of ancient creatures.

What role did social media play in Dr. Haridy's career?

Dr. Haridy credits social media, particularly Twitter, with helping her build a network in the scientific community. She mentions that it became a platform where people would tag her to identify bones or share findings, thus establishing her as a go-to expert in the field. This community aspect of social media has not only helped her career but also fostered collaborations that enhance scientific research.

What sparked Dr. Haridy's interest in paleontology?

Dr. Haridy's journey into paleontology began with her interest in anatomy and physiology while studying for medical school. She realized that her passion lay in the anatomical aspects of science rather than practicing medicine. Volunteering in a paleo lab allowed her to discover paleohistology, which captivated her with the idea that ancient tissues could provide insights into life that existed millions of years ago.

What are some techniques used in paleohistology?

One of the key techniques in paleohistology mentioned by Dr. Haridy is examining fossils under a microscope. This allows scientists to observe the bone tissue and understand how it has changed over time. The ability to study these ancient tissues leads to new questions about evolutionary biology and helps to uncover the mysteries of how ancient species lived and evolved.