Kell, S.P.; Knüpffer, H.; Jury, S.L.; Ford-Lloyd, B.V.; and Maxted, N., 2008. 'Crops and Wild Relatives of the Euro‑Mediterranean Region: Making and using a conservation catalogue', in Crop Wild Relatives Conservation and Use, Maxted, N. et al. (eds).
Fly only for distances greater than 700 km. Otherwise take the train. A transatlantic flight produces almost half as much CO2 as an average person produces over a period of one year while meeting all his or her other needs, such as lighting, heating and car travel!
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