The book brings home for all of us the hopes and fears of the new biology. In this dramatic and suspenseful narrative, Jonathan Weiner gives us a remarkable portrait of science and medicine today. We learn about gene therapy, stem cells, brain vaccines, and other novel treatments for such nerve-death diseases as ALS, Alzheimer's, and Parkinson's -- diseases that afflict millions, and touch the lives of many more.
"The Heywoods' story taught me many things about the nature of healing in the new millennium," Weiner writes. "They also taught me about what has not changed since the time of the ancients and may never change as long as there are human beings -- about what Lucretius calls 'the ever-living wound of love.'"This P.S. edition features an extra 16 pages of insights into the book, including author interviews, recommended reading, and more.
The authors used a vast and unparalleled range of ecological, behavioral, and genetic data--including song recordings, DNA analyses, and feeding and breeding behavior--to measure changes in finch populations on the small island of Daphne Major in the Galápagos archipelago. They find that natural selection happens repeatedly, that finches hybridize and exchange genes rarely, and that they compete for scarce food in times of drought, with the remarkable result that the finch populations today differ significantly in average beak size and shape from those of forty years ago. The authors' most spectacular discovery is the initiation and establishment of a new lineage that now behaves as a new species, differing from others in size, song, and other characteristics. The authors emphasize the immeasurable value of continuous long-term studies of natural populations and of critical opportunities for detecting and understanding rare but significant events.
By following the fates of finches for several generations, 40 Years of Evolution offers unparalleled insights into ecological and evolutionary changes in natural environments.