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The Chinese are determined to be number one in the world at everything - including things that are not very healthy.

China has experienced unprecedented economic growth in the past two decades and with that have come equally dramatic changes in the weight, diets and physical activity levels of its people. 
A new analysis used data from the China Health and Nutrition Survey (CHNS), the longest ongoing study of its kind in China. Between 1989 and 2011, the study followed more than 29,000 people in 300 communities throughout China, with surveys conducted in 1989, 1991, 1993, 1997, 2000, 2004, 2006, 2009 and 2011. 
Dark matter and dark energy is thought to account for up to 80% of the matter in the universe. Does it exist? Well, it has to, we just can't see it. So what is it? We better know what it isn't.
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.