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Science News for May 11, 2007


Study sheds light on Earth's CO2 cycles

A new study reveals two ancient CO2 pulses from the southern ocean around Antarctica, shedding light on Earth's CO2 cycles and their implications for climate change. The research tracked CO2 from the deep ocean to the upper ocean and atmosphere, providing insights into natural CO2 cycles and human-caused climate change.

SourceKent State University·JournalScience·DateMay 11, 2007

Nerves controlling muscles are best repaired with similar nerves

A team of surgeons at Washington University School of Medicine has found that using motor nerves to repair damaged muscles yields better results than traditional sensory nerve grafts. The study used a novel approach, where intact motor nerves were used as grafts in rat models, resulting in significant improvements in muscle function.

SourceWashU Medicine·JournalMicrosurgery·DateMay 11, 2007

Slowing the racing heart

Scientists have found an enzyme called Pak 1 that acts on the heart's pacemaker to slow the rapid beating of the heart's 'fight-or-flight' reaction to adrenaline. This discovery opens up new avenues for diagnosis, drug design and treatment of common heart diseases.