Complex sentence: In 2011, the CWF took steps to reduce the organization's carbon footprint including, weighing their mail to avoid over-mailing, less travel and more centralized meetings, installing solar units and recycling.
Split into simpler sentences: In 2011, the CWF took steps to reduce the organization's carbon footprint. The steps they took to reduce their carbon footprint included weighing their mail to avoid over-mailing, less travel and more centralized meetings, installing solar units and recycling.