1.   English Nature and the National Rivers Authority are testing the feasibility of what they are calling a managed retreat from the sea and soft defences.

2.   BP favored a single route to spare the cost of building an early pipeline simply to test the feasibility of exporting from the largely untested region.

3.   Members of Congress are seeking a compromise that would test the feasibility of medical savings accounts.

4.   Before work begins on the airport, however, the two countries plan a one-year trial of the system to test its feasibility.

5.   Four states are testing the feasibility of doing so.

6.   Frampton and Hinesley are testing the feasibility of grafting Fraser fir seedlings onto roots of fir species less susceptible to root rot.