Global warming past climate extremes

Global warming past climate extremes
Choose one of the past climate extremes presented in the documentary A Global Warning? (2007;Stephen Marsh, producer, and Alex Hearle, director), and one of the pieces of scientific evidence forit (e.g. climate archive, experiment, etc.).
(1) explain how the evidence is used toreconstruct the past climate extreme you chose;
(2) examine whether or not other scientific studies(i.e. articles in the scientific) literature actually support this evidence. This examination should becarried out using scholarly sources, such as, scientific journals, text books, or articles fromrespectable scientific organizations (e.g., NOAA). Finally,
(3) discuss problems/difficulties/potentialpitfalls in using this type of evidence, and the conclusions derived from it, for the reconstruction of past climate extreme