Then came the second chemical, and then a third.

These chemicals come out of solution as the water cools, and can cause environmental damage if released.

These chemicals can come from either natural or synthetic sources.

There, the new chemical must be coming in, the needle's going back up again to fully charged.

Scientists conclude that the chemicals must be coming from somewhere else.

The chemicals could have come from any number of other sources.

When these chemicals came along, of course we took them.

"Is that where your funny chemicals are coming from?"

She thinks that the chemical came from the tattoo ink and wants them both to head to the hospital to be tested.

About $2.8 billion, or almost 60 percent of that total, came from specialty chemicals, in which Grace is the world leader.