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Science News for November 4, 1999


Biodiversity yields dividends, finds pan-European research

A study by BIODEPTH found that reducing species richness in plant communities results in decreased productivity, higher soil nitrate concentrations, and altered ecosystem processes. The findings suggest that preserving and restoring biodiversity is crucial for maintaining grassland productivity.

SourceMax-Planck-Gesellschaft·JournalScience·DateNov 4, 1999
Creality K1 Max 3D Printer

Creality K1 Max 3D Printer rapidly prototypes brackets, adapters, and fixtures for instruments and classroom demonstrations at large build volume.

The American Association of Pharmaceutical Scientists releases latest findings at Annual Meeting

The American Association of Pharmaceutical Scientists (AAPS) has released new research on the influence of direct-to-consumer advertising (DTCA) on doctors' prescribing habits. A study found that half of physicians feel pressure to prescribe products patients have seen advertised, with 77% linking patient requests to TV advertising. Ad...

SourceAmerican Association of Pharmaceutical Scientists·DateNov 4, 1999

Study casts doubt that melatonin goes down as age goes up: Older buyers take note

A new study published in the American Journal of Medicine challenges the notion that melatonin levels decline with age. Researchers found that healthy older adults' nighttime melatonin levels were similar to those of younger men, contradicting popular advertising claims. The study suggests that aging does not affect melatonin regulatio...

SourceNIH/National Institute on Aging·DateNov 4, 1999

Trigger for key breast cancer protein identified

Researchers from the Howard Hughes Medical Institute have identified a protein that works closely with Brca1 to initiate DNA repair. Mutations in this trigger protein may be responsible for more instances of breast cancer than Brca1 mutations, accounting for nearly ten percent of all breast cancers.

SourceHoward Hughes Medical Institute·JournalScience·DateNov 4, 1999

Vertical split keyboard lowers injury risk

A Cornell University study found that a vertical split keyboard lowers injury risk for carpal tunnel syndrome, with wrists in safe positions 71% and 78% of the time. The prototype keyboard design reduces strain on wrists and forearms, allowing for more efficient typing movements.

SourceCornell University·JournalErgonomics·DateNov 4, 1999
Sky & Telescope Pocket Sky Atlas, 2nd Edition

Sky & Telescope Pocket Sky Atlas, 2nd Edition is a durable star atlas for planning sessions, identifying targets, and teaching celestial navigation.