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Science News for January 8, 2002


Teaching physics first

The Physics First movement seeks to create a science-literate population by introducing physics in high school, rather than later. Preliminary analysis from a study shows that while many teachers are skeptical about reversing the traditional sequence of sciences, those who already teach early physics are enthusiastic about teaching it.

Blood stem cells carry targeted genes

Scientists have successfully genetically altered human blood stem cells to selectively activate genes in developing immune cells, providing a potential breakthrough for gene therapy. The research uses a lentivirus to transfer a fluorescent protein gene into stem cells, which then express the gene only in specific immune cells called an...

SourceJohns Hopkins Medicine·JournalBlood·DateJan 8, 2002

The second great in-migration

The report reveals that foreign immigration played a significant role in driving growth in the nation's population and labor force between 1990 and 2000. Massachusetts and New York were among the top states for dependence on immigrants, with all labor force growth in the state attributed to foreign immigration.