Continues a discussion of Carbon 14 dating from a previous video. [4:15]

Discussion of the relatively recent changes in our ability as a species to shine light on our deep past. [9:53]

An introduction to Carbon 14, how it comes about, how it spreads throughout the Earth and living things, and its use in estimating when an organism died.

Work through a calculation for K-Ar dating this video lecture. Understand the mathematics in estimating age using radioactive dating. [11:06]

Video lecture explores how K-Ar dating can be used to date very old volcanic rock and the things that might be buried in between. [10:35]