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Science News Archive 2006 - Page 17


Page 17 of 178

Ocean drilling operations are at cutting edge of scientific marine research

Scientists from the Integrated Ocean Drilling Program (IODP) are making significant discoveries in ocean drilling operations, including the first complete section through a modern cold-water coral mound. The IODP is an international scientific research program that explores subseafloor environments and monitors environmental change, ge...

Impact of climate change in Africa

Climate change may cause large infrequent disturbances in Africa, leading to devastating environmental and societal impacts. Historical data suggests that such events can have a lasting effect, with examples like the Maasai 'Emutai' period showing catastrophic consequences.

SourceBlackwell Publishing Ltd.·JournalAfrican Journal of Ecology·DateNov 24, 2006

Seismolgists get handle on heat flow deep in Earth

Researchers have made significant discoveries about the structure of Earth's core-mantle boundary, including a post-perovskite lens and temperature measurements that shed light on heat flow deep within the planet. The findings have implications for understanding the age of Earth's solid inner core and its magnetic field.

SourceArizona State University·JournalScience·DateNov 23, 2006

Chemo combo fights cancer

Genetically-modified bacteria Clostridium novyi-NT have shown promise in treating cancer by selectively killing tumor cells while sparing normal cells. The combination of bacterial therapy and chemotherapy has demonstrated significant tumor-killing effects, with over two-thirds of mice cured permanently.

SourceJohns Hopkins Medicine·JournalScience·DateNov 23, 2006

Listening in on the birth pangs of Earth's crust

Researchers at Brown University and Columbia's Earth Institute recovered two lost ocean-bottom seismometers, providing unprecedented insights into the process of seafloor spreading. The data from the instruments reveals increasing seismic activity before a major episode of seafloor creation, offering a unique 'ear to earth's belly'.

SourceBrown University·JournalScience·DateNov 23, 2006

Focus on photosynthesis

Researchers at the Max Planck Institute have determined the structure of photosystem II, a crucial step in photosynthesis. The discovery reveals the precise arrangement of manganese and oxygen atoms, which could lead to the development of artificial catalysts for regenerative hydrogen production.

SourceMax-Planck-Gesellschaft·JournalScience·DateNov 23, 2006

JCI table of contents: November 22, 2006

A study published in JCI found that overexpression of CaMKII altered sodium channel function, leading to increased susceptibility to ventricular tachyarrhythmias in mice. Additionally, proteasome composition differed between Crohn disease and ulcerative colitis, with CD showing increased degradation of an NF-kappa-B inhibitor.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateNov 22, 2006

Parkinson's mutation stunts neurons

Researchers found that mutations in LRRK2 protein stunt neuron growth and branching, leading to dopamine-producing neuron loss and disease progression. The study provides a useful animal model for studying PD and discovering new treatments.

SourceCell Press·JournalNeuron·DateNov 22, 2006

The 'Freakonomics of food'

A study by Cornell Food & Brand Lab shows that we tend to overeat due to cues around us, such as plate size and distractions. By using smaller plates or limiting food options, individuals can make easier changes to control their eating habits.

SourceCornell Food & Brand Lab·JournalAnnals of Internal Medicine·DateNov 22, 2006

Mind the gap

A team of scientists used high-energy X-rays to study the hydrophobic water gap, revealing its size and characteristics. The study provides new insights into protein folding and stability, which are crucial in biological systems.

SourceEuropean Synchrotron Radiation Facility·JournalProceedings of the National Academy of Sciences·DateNov 22, 2006

Getting to the heart of the heart

A type of stem cell has been identified that gives rise to both myocardial cells and vascular smooth muscle cells, challenging previous notions of how the heart develops. This discovery could lead to the development of new treatments for congenital heart defects and damage caused by heart attacks.

Technology for monitoring fetal oxygen during labor offers no apparent benefit

Researchers found that continuous fetal oxygen saturation monitoring had no significant effect on Caesarean delivery rates for both normal and abnormal fetal heart rates. The study enrolled over 5000 women across 14 hospitals, with no statistically meaningful differences in Caesarean deliveries between the groups.

Zinc plays important role in brain circuitry

Researchers have demonstrated a central role for zinc in modulating signaling among neurons, shedding light on its presence in free ion pools. The findings show that manipulating synaptic zinc levels can affect neuronal action, highlighting the complexity of potential therapeutic interventions.

SourceCell Press·JournalNeuron·DateNov 22, 2006

Physicians rate involvement in public roles as important

Physicians reported being actively involved in community participation, political involvement, and collective advocacy, with over two-thirds participating in at least one role. Factors related to civic-mindedness, such as age, sex, and medical specialty, influenced the perceived importance of public roles.

SourceJAMA Network·JournalJAMA·DateNov 21, 2006