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Living in the guts of worms are seemingly innocuous Photorhabdus luminescens bacteria that contribute to the worms' survival. Yet with a flip of a genetic switch, those same bacteria transform from harmless microbes into deadly insecticides.

How the 
photorhabdus bacteria  and a single promoter inversion switches it from an upstanding community member in the gut microbiome to deadly killer in insect blood is the subject of a new study. The bacteria in question are bioluminescent insect pathogens. In their mutualistic state, they reside in the intestines of worms, growing slowly and performing other functions that aid nematode's survival, even contributing to reproduction.
Aerosols from relatively small volcanic eruptions can be boosted into the high atmosphere by weather systems such as monsoons and affect global temperatures, according to a new study. 
Researchers have been able to photograph the shadow of a single atom for the first time.

And this absorption imaging took five years of work. They basically wanted to investigate how few atoms are required to cast a shadow and they found it takes just one. At the heart of the effort is a super high-resolution microscope, which makes the atom's shadow dark enough to see. 

People still use optical microscopes in research?  Apparently so.  And the 
Griffith University team claims no other facility in the world has the capability for such extreme optical imaging. They did it by isolating it in a chamber and immobilizing it in free space using electrical forces. 
At CERN, the European Particle Physics Laboratory, the ATLAS and CMS experiments presented their latest results in the search for the Higgs particle. Both experiments see strong indications for the presence of a new particle in the mass region around 125-126 GeV and a 4.9-5 sigma signal.

When the results from the two experiments are combined, they should show a 5-sigma signal and be a discovery. If this is indeed a new particle, then it must be a boson and it would be the heaviest such particle ever found.
The long and complicated journey to detect the Higgs boson might finally have reached its goal, said experimental physicists at the European Laboratory for Particle Physics, CERN, near Geneva - and they said it with a telltale bump on a slide.

The Higgs boson is the final building block that has been missing from the "Standard Model," which describes the structure of matter in the universe. The Higgs boson combines two forces of nature and shows that they are, in fact, different aspects of a more fundamental force. The particle is also responsible for the existence of mass in the elementary particles.
V1647 Ori resides 1300 light-years away in McNeil’s Nebula. It is a young Sun-like star spinning at high speed and spewing out super-hot plasma and astronomers have now been able to deduce what might be happening behind the dusty disc cloaking the star. 

Three telescopes, XMM-Newton, Chandra, and Suzaku, have kept their eyes on it during two multi-year outbursts. The first lasted from 2003 to 2006; the second has been under way since 2008.  During these extended outbursts the star displays faster growth in mass, a surge in X-ray emission and a dramatic increase in temperature to 50 million degrees celsius.