Together with the tower, it added 6,397 tons (6,500 tonnes) to the weight of the building.

She estimated that this would add 2,500 tons a day to recycling.

The above modifications added 560 tons to the ships.

Equipment changes added 5 tons to the earlier 100-ton design.

In Spain, aluminum producers added 80,000 tons of capacity last month.

So far, it has dumped 119,000 tons and added 65,000 tons to its reserves.

Today, they estimate, human activity adds 132 million to 153 million metric tons.

Without the cap, new plants would add 5.5 million tons to its emissions.

This would however have added eight tons in extra weight, and so was rejected.

Three new smelters being built in Brazil will add 230,000 tons.