11.   Unpublished figures compiled as part of research by the Department of the Environment reveal that acid rain is causing more extensive damage in Britain than previous estimates had suggested.

12.   Research by Friends of the Earth shows that suspect pesticides include Dinocap, Alachlor and a group of fungicides known as EBDCs.

13.   British farmers are growing too few varieties of the main food crops, according to research by the Sustainable Agriculture, Food and Environment Alliance.

14.   Research by Friends of the Earth showing that commercial exploitation of peatbogs is not sustainable has been endorsed by English Nature.

15.   Similar research by the NASA Goddard Institute for Space Studies in New York reached similar conclusions.

16.   High levels of industrial and traffic pollutants are to blame for widespread health problems in Kiev, Ukraine, according to research by the Ukrainian Ministry of Health.

17.   Pollution linked to acid rain in the US may be declining according to research by the US Geological Survey.

18.   This article seeks to contribute to this pool of research by suggesting a teaching method which can be used to explain the concepts of cohesion and narrative structure.

19.   Research by the Imperial Cancer Research Fund Laboratory in Oxford has traced the protein responsible for blocking treatment.

20.   The Hallmark seminars are based on two years research by DUBS and the David Hall Partnership into consistently successful and profitable companies.