Some resources from federal government sites are currently unavailable; when possible, we’ve provided alternative non-government links to ensure continued data access.
These two videos, an article, and discussion questions examine the scientific analysis of the Antarctic ice sheet and fossil sea shells and what these analyses tell us about the Earth's atmosphere and ocean temperatures in antiquity.
Students will learn about and discuss the differences between direct and indirect evidence, the implications of the correlation between atmospheric CO2 levels and temperature, and the weight of different datasets confirming the same conclusion.
