This is a replication package associated with the following paper. Diomidis Spinellis and Panos Louridas. The carbon footprint of conference papers. PLoS ONE, 8(6):e66508, May 2013. (doi:10.1371/journal.pone.0066508) Abstract: The action required to stem the environmental and social implications of climate change depends crucially on how humankind shapes technology, economy, lifestyle and policy. With transport CO2 emissions accounting for about a quarter of the total, we examine the contribution of CO2 output by scientific travel. Thankfully for the reputation of the scientific community, CO2 emissions associated with the trips required to present a paper at a scientific conference account for just 0.003% of the yearly total. However, with CO2 emissions for a single conference trip amounting to 7% of an average individual’s total CO2 emissions, scientists should lead by example by demonstrating leadership in addressing the issue. The replication package contains the software code and data for populating the associated database and performing the analysis.