Showing results for "united states of america" in Evolution & Genetics

More than 12,000 years ago, in one of the greatest triumphs of prehistory, humans colonized North America, a continent that was then truly a new world. Just when and how they did so has been one of the most perplexing and controversial questions in archaeology.

Phase III of DNA Consultants' Cherokee DNA Studies adds more than 50 new participants to what has become a classic project. They'd all been told there was no way they could be Indian given their DNA haplotype or mother's direct line.

Most claims of Native American ancestry rest on the mother's ethnicity. This can be verified by a DNA test determining what type of mitochondrial DNA she passed to you. A hundred participants in DNA Consultants multi-phase Cherokee DNA Study did just that. What they had in common is they were previously rejected - by commercial firms, genealogy groups, government agencies and tribes. Their mitochondrial DNA was not classified as Native American. These are the "anomalous" Cherokee.

The question of teaching evolution in the public schools is a continuing and frequently heated political issue in America. From Tennessee's Scopes Trial in 1925 to recent battles that have erupted in Louisiana, Kansas, Ohio, and countless other localities, the critics and supporters of evolution have fought nonstop over the role of science and religion in American public life. In American Genesis, Jeffrey P. Moran explores the ways in which the evolution debate has reverberated beyond the confines of state legislatures and courthouses.

Bill McKibben, examines the dangers inherent in an array of technologies that threaten not just our survival, but our identity. Imagine a future where lab workers can reprogram human embryos to make our children "smarter" or "more sociable" or "happier." Enough examines such possibilities, and explains how we can avoid their worst consequences while still enjoying the fruits of our new scientific understandings.