21.   Four years after a far-reaching environmental accord was sealed at the Earth Summit in Rio de Janeiro, there has been much talk but little action.

22.   The agreements will be formally sealed at a concluding news conference Wednesday.

23.   The sack, which resembles a sleeping bag sealed at the chest, is designed to pull blood into the legs.

24.   The area was sealed at dawn by the army which swept the area before attacking the house.