Mercury, closest planet to the sun, is as hot as you would expect, with daytime temperatures of 800 degrees Fahrenheit/450 degrees Celsius and because of its small size, its gravity is weak, only about 38 percent of Earth's.

These conditions make it hard for the planet to hold on to its extremely thin atmosphere, which can can only be seen by special instruments attached to telescopes and spacecraft like MESSENGER (MErcury Surface, Space ENvironment, GEochemistry, and Ranging).  Even then it's not easy because Mercury's magnetic field gets in the way. MESSENGER's first flyby on January 14, 2008, confirmed that the planet has a global magnetic field, as first discovered by the Mariner 10 spacecraft during its flybys of the planet in 1974 and 1975.

There is beauty in strange places. An ordinary life can leave traces of us that gather into something oddly appealing. Something more than the sum of its parts.

Do you have what it takes to be Scientific Blogging's alpha geek?  Well it’s time put your geek where your mouth is…IF YOU CAN!

But first a warning: yes, you could Google for these answers, but then, deep down, you’ll know you’re a bad person. Then again, you might win a free Geeks’ Guide to World Domination. So you’ll have to balance total loss of self worth with free geek schwag. It’s up to you.

We're somewhat lost in how to meet future carbon footprint goals.  Heck, Germany should have been able to just close a few Soviet-era East German factories and hit their Kyoto protocol targets but even they couldn't do it.   

The answer, as always, may be in nature.   Some parts of outer space are great at getting rid of excess carbon, including an unusual carbon-rich star that was part of a mystery stellar explosion recorded in 2006.

African-Americans are significantly more likely to be sanctioned by the United States welfare system than Caucasians, according to research published in the June issue of the American Sociological Review, but is there bias?  Welfare sanctions in response to rules violations should be applied, in both law and principle, according to behavior and not characteristics like race, yet Sanford F. Schram, a professor of social theory and policy at Bryn Mawr College's Graduate School of Social Work and Social Research, says that is exactly what happens.

"This study provides powerful evidence that race and stereotype-consistent traits interact to shape the allocation of punishment at the frontlines of welfare reform," according to Schram.

A University of Leicester student will be presenting his discovery of 425 million year-old fossils found in rocks from the Silurian period of geological time in Herefordshire.  The fossils represent a great range of animal groups and their study has tremendously increased knowledge of the evolution of life.

David Riley’s research represents the first major attempt by scientists to understand the preservation pathway giving us a rare ‘window’ into a Silurian sea floor environment.