Climate scientists discuss what they know about global climate change today, and how they know it.

The Southern Oscillation Index tracks differences in air pressure between the eastern and western sides of the tropical Pacific.

(Updated June 2, 2014)

This is a collection of five short videos - The Arctic Ice Cap, Sampling the Ice, Arctic Fisheries, Natives Feel Effect and Arctic Energy -- that can be played separately or in sequence. They show how climate change is affecting fishing, native populations and access for the oil and gas industry in the Arctic. The videos include personal reflections by writers Andrew C. Revkin and Simon Romero , scientists and residents about their experience of the impacts of the climate change in the Arctic.

This interactive visualization is a suite of weather and climate datasets as well as tools with which to manipulate and display them visually.

This visualization is a website with an interactive calculator that allows for estimation of greenhouse gas production from croplands in the United States.

Considerations for Climate Change & Variability Adaptation on the Navajo Nation

A new report led by the University of Colorado Boulder summarizes the impact of climate change on Navajo Nation lands and discusses factors that affect people’s vulnerabilities to climate impacts, and outlines a way for the region's residents to plan for ongoing environmental change.

This video describes the impact of extreme heat on Philadelphia in the summer of 2011 and how the city is adapting to new expectations about its weather. It uses this example to introduce the new national climate normals, released by NOAA's National Climatic Data Center (NCDC) that summer.

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