1.   By investing in efficient plant it could generate lots of valuable carbon credits to sell to wealthier, more wasteful nations.

2.   Meanwhile, a variety of plans are proceeding to trade carbon credits on global exchanges or over the Internet.

3.   Some industry lobbyists said they doubted the system for trading carbon credits could be set up in a way that avoided cheating or inaccuracy.

4.   The Bush administration has rejected the Kyoto treaty and has also objected to the concept of carbon credits.

5.   While environmentalists argue over the value of carbon credits, financiers are hurrying to trade them.

6.   A country falling short of its target can buy carbon credits from countries that exceed their targets, at a price set by the market like any commodity.

7.   According to the proposal, the banking and borrowing of carbon credits are also allowed.

8.   As part of a wide-ranging package of free market proposals, the United States wants to be able to trade carbon emission credits and purchase foreign sinks.

9.   Many countries, especially in Europe, will set up domestic carbon trading markets, in which companies can buy and sell carbon credits.

10.   Some U.S. companies have already begun trading in carbon credits, anticipating that one day they will face mandatory limits.