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Running Time:
00:03:07
Geneticist Mark Stoneking discusses a special type of genetic material called mitochondrial DNA gets passed directly from mother to child. Largely unchanged from generation to generation, this genetic material gives researchers a way to track populations back in time.

Project: Evidence: How Do We Know What We Know? | Browse All

Date: November 11, 2008
Format: Interview
Category: Popular Science
Subject(s): Life Science/Biology, General Science
Running Time:
00:00:59
Anthropologist Tanya Smith explains that invisible microstructure inside teeth creates a durable record of life history, including events such as birth, illness, famine, stress, and death.

Project: Evidence: How Do We Know What We Know? | Browse All

Date: November 11, 2008
Format: Interview
Category: Popular Science
Subject(s): Life Science/Biology, General Science
Running Time:
00:01:53
Anthropologist Jean-Jacques Hublin explains that unlike teeth, bones undergo a lifelong process called remodeling, in which they are constantly being destroyed and recreated.

Project: Evidence: How Do We Know What We Know? | Browse All

Date: November 11, 2008
Format: Interview
Category: Popular Science
Subject(s): Life Science/Biology, General Science
Running Time:
00:02:25
Anthropologist Philipp Gunz explains the process of virtual fossil reconstruction, a technique that can reverse the damage done to fossils by time and the elements.

Project: Evidence: How Do We Know What We Know? | Browse All

Date: November 11, 2008
Format: Interview
Category: Popular Science
Subject(s): Life Science/Biology, General Science
Running Time:
00:00:57
Anthropologist Katerina Harvati explains the rare convergence of circumstances that are necessary for the discovery of a fossil specimen.

Project: Evidence: How Do We Know What We Know? | Browse All

Date: November 11, 2008
Format: Interview
Category: Popular Science
Subject(s): Life Science/Biology, General Science
Running Time:
00:00:48
Anthropologist Jean-Jacques Hublin discusses the role of conflict and argument in the scientific process.

Project: Evidence: How Do We Know What We Know? | Browse All

Date: November 11, 2008
Format: Interview
Category: Popular Science
Subject(s): Life Science/Biology, General Science
Running Time:
00:37:58
Halloween Special Edition! In this zany competition teachers have ten minutes to create a science activity from a special Halloween secret ingredient... bats!

Project: Iron Science Teacher | Browse All

Date: October 31, 2008
Format: Demonstration / Activity
Category: Everyday Science
Subject(s): Physics, General Science, Life Science/Biology
Running Time:
00:02:29
Ice Stories correspondent Howie Koss interviews James Van Matre, Waste Management Supervisor at McMurdo Station. We talk about Antarctica's waste management practices of the past and present, and why it's important to recycle.

Project: Ice Stories: Dispatches from Polar Scientists | Browse All

Date: October 27, 2008
Format: Interview
Category: Science in Action
Subject(s):
Running Time:
00:01:38
Evolutionary geneticist Svante Pääbo explains that analysis of ancient Neanderthal DNA is very tricky work, thanks to fragmentation and contamination of genetic material.

Project: Evidence: How Do We Know What We Know? | Browse All

Date: October 26, 2008
Format: Interview
Category: Popular Science
Subject(s): Life Science/Biology, General Science
Running Time:
00:02:42
Is a single gene, FOXP2, the secret to human speech? Researchers discuss the genetic underpinnings of speech and language.

Project: Evidence: How Do We Know What We Know? | Browse All

Date: October 26, 2008
Format: Interview
Category: Popular Science
Subject(s): Life Science/Biology, General Science