Contact us! From left to right: Samuli Puroila, Antti Iho, Markku Ollikainen, Petri Ekholm and Eliisa Punttila. Markku OllikainenProfessor of Environmental and Resource EconomicsUniversity of Helsinki+358 2941 58065markku.ollikainen (a) helsinki.fi Petri EkholmSenior Research ScientistFinnish Environment Institute +358 2952 51102petri.ekholm (a) environment.fi Antti IhoPrincipal Research ScientistLuke+358 2953 26159antti.iho (a) luke.fi Venla Ala-HarjaTutkimusavustajaHelsingin yliopisto+358 294158079 venla.ala-harja (a) helsinki.fi If you have any questions, do not hesitate to contact us!