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Science News for September 19, 2002


Viagra for alleviation of pulmonary hypertension?

A randomized controlled trial found that sildenafil reduced pulmonary blood resistance, a key indicator of pulmonary hypertension. The study suggests sildenafil could be a promising candidate for long-term treatment of secondary pulmonary hypertension in lung fibrosis. Controlled trials are needed to confirm the findings.

SourceThe Lancet_DELETED·JournalThe Lancet·DateSep 19, 2002

Casket resurrects new vision of ancient Jerusalem

A Cincinnati ossuary has been discovered to feature a unique image of a massive Jerusalem tomb from the first century, associated with early Rabbi Hillel and Jesus of Nazareth. The ossuary's distinctive three pyramids have garnered attention from scholars, providing new insights into ancient Jerusalem's architecture.

SourceUniversity of Cincinnati·JournalJournal of Jewish Studies·DateSep 19, 2002

Researchers show why active mountains don't get taller

Active mountains, despite constant uplift, do not get taller because of erosion forces balancing uplift and sediment transport. Researchers found that river erosion rates closely match the rate at which rocks move up, with abrasion by suspended particles doing most of the down cutting.

SourcePenn State·JournalScience·DateSep 19, 2002

New role of genes in breast cancer

A recent study published in New England Journal of Medicine found that genetically identical twin pairs had similar breast densities, while non-identical pairs had breast densities about half as similar. This suggests that genetic factors play a major role in explaining why women of the same age have different breast density.

SourceUniversity of Melbourne·JournalNew England Journal of Medicine·DateSep 19, 2002