Suicidal Comets and Dancing Beetles
Comets in a New Light
A Comet diving into and disintegrating within the Suns atmosphere has been observed by scientists in the US.
C/2011 N3 is one of the so-called Kreutz family which pass extremely close to the Sun's surface. Over 2000 of them have been detected in the past 15 years.
But their paths through the Sun's atmosphere were previously uncharted and now thanks to NASA's Solar Dynamics Observatory, Solar Heliospheric Observatory and Solar-Terrestrial Relations Observatory, the self-destructive path of this most recent C/2011 N3 comet has been observed.
Carey Lisse from the John Hopkins University Applied Physics Laboratory comments on the discovery...
The Benefits of Exercise
Exercise induces the clearance and recycling of components within our cells, resulting in protection against metabolic disorders such as diabetes.
Working with mice,
Congcong He and colleagues, from the University of Texas Southwestern medical centre, found that exercise triggers a process called autophagy - the self-clearance and catabolism of certain cell components.
This is mainly triggered within skeletal and cardiac muscle to enable increased endurance and glucose metabolism simultaneously protecting against certain metabolic conditions.
Detecting Earthquakes with Citizen Science
Citizen scientists could lead the way for
earthquake research and detection in the future.
Citizen science involves members of the public reporting on and collecting data to aid scientific research. Recent electronic applications in the field of seismology include the 'Quake-catcher' program turning your computer into a seismometer and placing it on a global network as well as more mobile apps such as the 'i-shake Cal' app for iPhones collecting ground shaking measurements.
Publishing in the journal science, UC Berkeley's Richard Allen explains their importance in seismology.
Dancing with Dung
And finally, the mystery of why
dung beetles dance, has been solved by scientists at the University of Lund.
Dung beetles form individual balls from a dung pile which they then roll a safe distance away to feed on without competition. The beetles are known to climb on top of their ball and spin around along certain points of their route and the reasons behind this have previously been unknown.
Working with beetles in the lab, Emily Baird has discovered that this dance it's all about the beetles knowing where they're going...
The work is published this week, in the journal PLoS one.