What causes obesity?  Obviously ingesting more calories than a person burns leads to weight gain but what really causes obesity?

Will banning Big Gulps, Happy Meals and Trans fats make people thin? (1)

While a modern 'ban, legislate and micromanage' mentality about food has taken hold on the coasts of the US, obesity researchers in the middle, at the University of Colorado School of Medicine, contend handing over even more control of choice to social authoritarians won't work; we instead have to show people that just because you can eat a lot of junk food doesn't mean you should. And go for a walk once in a while.

By now it's been written on so many newspapers and magazines -including Nature (the magazine, not the bitch)- that if a colleague of mine tries to reproach me for writing about the impending seminar at CERN, where ATLAS and CMS are vented to be showing observation-level signals of a new particle which smells like the Higgs and quacks like the Higgs, I will publically send him or her to hell.

Besides, I have been cited as a "tease" in a nice summary which appeared in the Atlantic Wire site today. The line describing me (next to a picture that is N years old but which is dear to me for some reason) is the following:

If you use off-the-shelf electronics parts instead of expensive, hard-to-find space-rated gear, will your satellite work?  The process of 'derating' will let you do this.  Engineer Amanda Shields contributes today's guest column.

I'm becoming very familiar with derating and the joys of it.   Electrical components for spacecraft have to be derated. Basically, that means that you take the electrical component and you look at the data sheet for that piece and you have to say "Well, according to the datasheet it can have a maximum input power of XX, but NASA says that it has to be derated to 80% of that, so we can actually only have an input power of YY".

Older honey bees halt and even reverse the effects of brain aging when they are given roles typically handled by younger bees. This has led researchers to suggest that that social interventions may be as valuable as drugs for dealing with age-related dementia in humans.

Mundipharma today announced the positive European Commission (EC) decision for flutiform(R) (fluticasone propionate/formoterol fumarate), a new combination therapy for the maintenance treatment of asthma, in Europe. This decision is binding on all 21 Concerned Member States involved in the decentralized procedure (DCP) and the first national approvals of flutiform are expected across a number of countries by the end of 2012. 

The influence of aerosols and clouds represent one of the largest known uncertainties in the scientific understanding of trends in our past global climate - and also hinder predictions of future climate change.

Researchers have now shown that the rate of condensation of water on organic aerosol particles in the atmosphere can be very slow, taking many hours for a particle to change in size. This could have significant consequences for understanding how clouds are formed, affecting climate.

Aerosols are small particles less than 1 micrometer in diameter and clouds are liquid droplets of 1–1,000 micrometers in diameter. 

If you want to understand the larger spatial patterns and timing of drought in the arid and semiarid areas of the American West, you will need to look at tree ring and oxygen isotope data.

Estimates of past precipitation are made from proxies like tree rings, which can record amounts of precipitation and temperature. But tree rings are better at recording what happens during the spring and summer, when the tree is growing, than in the winter when the tree is not. To people outside science, the fact that they do not provide the same information on past precipitation is a concern, but the differing results are a good thing to geologists.

Dinosaurs are starting to look less and less like they were portrayed decades ago. The fossil of Sciurumimus albersdoerferi, which lived around 150 million years ago, is the first evidence of feathered theropod dinosaurs that are not closely related to birds.  

Theropods are bipedal, mostly carnivorous dinosaurs. In recent years, scientists have discovered that many extinct theropods had feathers but feathering had only been found in theropods that are classified as coelurosaurs, a diverse group including animals like T. rex and birds.

Robbing the LHC experiments of media attention for 41 hours, the CDF and DZERO experiments are presenting today the results of their searches of the Higgs boson in the full datasets of proton-antiproton collisions acquired in the course of the last 10 years. You can follow the live streaming of the Tevatron seminar at this link.

UPDATE: the live streaming is here.

Below I will give some introductory notions on Higgs physics at the Tevatron; at the bottom of this post I am discussing the actual results.

Introduction