Most civil engineers work with some colleagues or clients who are skeptical of climate change for political reasons. The graphs below, from Bulletin No. 3, Documented Historic Indicators of Climate Change, show the unmistakable evidence of consistent, worldwide impacts of climate change over the past century. 

These trends are only continuing. Civil and environmental engineers designing infrastructure with a life of 50-100 years need to anticipate ranges of continuing changes. For the skeptics you know who may be showing more willingness to adapt to what is clearly happening, show them the following graphs. 

Climate Adaptation Engineering Bulletin No. 3
Documented Historic Indicators of Climate Change

A collection of 10 charts tracking variations in climate going back decades

For more background and to join an online discussion on these graphs, see Climate Adaptation Engineering Bulletin No. 3 in ASCE Collaborate.