Given a text, write a compressed version of it in a single sentence.

And with a donation of $15 or more, you'll receive a FREE Birdfeeder in appreciation for your concern.
With a donation of $15, you'll receive a free Birdfeed for your appreciation.

Although we have made progress as a result of the 1990 Acid Rain Program, we have not fully addressed the problem. Indicators of recovery of lakes and streams do not show consistent change in response to reduced SO2 emissions.
The 1990 Acid Rain Program has resulted in progress but complete solution of the problem. Indicators do not show consistent change in response to reduced S02 emissions.

In that regard, we enclose information highlighting an exciting achievement in cardiovascular medicine at the School of Medicine. The work by Loren I. Field, Ph.D., and his colleagues at the School was a cover story in a recent issue of Science - the preeminent journal recognizing benchmark research.
We enclose information highlighting an exciting achievement in cardiovascular medicine at the School of Medicine. Loren Field and colleagues work was a cover story in a recent issue of Science-a preeminent journal.