Earth's climate is changing - understanding how has become one of the biggest scientific projects ever undertaken. The program looks at the incredible methods that allowed scientists to arrive at precise figures, and uses stories from around the world to present this previously obscure field in an engrossing, accessible way. A timely and intriguing take on an urgent issue, Climate Change by Numbers reveals why scientists are so certain they are right, where we have reached the limits of our knowledge, and what uncertainty really means.

Streaming video file encoded with permission for digital streaming by Infobase on October 01, 2015.

Introduction: Climate Change By Numbers: Part 1 --(2:15) -- Warming Earth -- (2:58) -- Maury's Ocean Current Maps -- (3:37) -- Standardized Sea Temperature Measurement -- (3:56) -- Las Vegas Measurements -- (2:12) -- Kalman's Logarithm -- (3:38) -- Homogenization Process -- (2:14) -- Gaps in Temperature Measurement -- (4:16) -- Filling in the Gaps -- (3:30) -- Skepticism of Global Warming -- (2:14) -- Gosset's Statistical Method -- (4:49) -- The Student's T-Test -- (2:56) -- Significant Warming -- (4:45) -- Credits: Climate Change By Numbers: Part 1 -- (0:32).