Methane was discovered on Mars in 2004, meaning volcanic activity continues to generate heat below the martian surface or, if you are exceptionally kooky, that life there is generating it.

When Mars Express arrived in orbit around the red planet, Vittorio Formisano, Istituto di Fisica dello Spazio Interplanetario CNR, Rome, and the rest of the instrument team using planetary Fourier Spectrometer (PFS) began taking data and saw a puzzling signal; along with atmospheric gases such as carbon monoxide and water vapor, they saw methane.  
 

When did executions go from being functional example-setting to being more humane in method?

Annulla Linders, a University of Cincinnati sociologist, examined newspaper accounts of 19th and 20th century Ohio executions to put more 'scientific' executions in context.  

Linders used two late 19th century executions to illustrate the transition from hanging to electrocution and determined that central to the switch was the audience of executions - including journalists and physicians. 

Scientists at the University of California, Berkeley, and Lawrence Berkeley National Laboratory in the US, have performed sophisticated laser measurements to detect the subtle effects of one of nature's most elusive forces - the "weak interaction", and in the process also found the largest effect of the weak interaction ever observed in an atom.

Higher education has helped women narrow the wage gap but there is one college-related factor that has becoming increasingly important in perpetuating that gap, according to new research.

And that factor is their college major.   Women dominate the social sciences, for example, so by not moving more into hard sciences, the numbers are not normalizing across all fields.   Women at the higher levels of research and in disciplines like engineering show no modern wage gap.

Americans go to church less but the rate of departure previously reported may have been incorrect, according to sociologists Michael Hout and Claude S. Fischer of the University of California, Berkeley.

According to the new data, 93 percent of Americans believe in God, a figure unchanged since 1988. The group that increased was the group Hout and Fischer call "unchurched believers," those people who believe in God but report no religion. 

A new paper outlines what it calls a simple-to-use technique which enables companies to optimize the performance of industrial boilers and reduce their main emissions.

It's about time.   

Obviously there aren't going to be any new super-efficient combustion techniques any time soon -   combustion is what it is - but using a new oxidation method with an improved catalyst is a different story.   

A catalyst is a substance which increases the speed of chemical reactions, without taking any apparent part in the reaction, or which modifies the parameters of the reaction (temperature, pressure, concentration, etc.).  In the case of catalytic combustion, the main parameter is its speed of reaction given by the equation for the speed of the flame front UL: