Sending parcels can have a great influence upon the environment: Up to eight times as many CO₂ emissions result when a parcel is transported over the same route by aircraft rather than over the road network. The costs too can be up to five times higher. However, there is often a choice: Very few of the goods flown across Europe are really required so urgently that they must arrive within a day. ‘whyflyparcels.com’ is intended to help shippers make a better informed choice by presenting the ecological benefit of modeshift™.