Estimates say there are over 3,000,000 registered freelancers worldwide, competing for everything from computer programming and web design to finance and engineering.

How can you make yourself more attractive to potential employers?  

Does home field advantage matter? In baseball outfielders, the tricks and corners of a new baseball park might be meaningful but that effect should diminish over time. The Seattle Seahawks have a famously loud stadium and the team calls the audience "the twelfth man" but they didn't need it to rout the Denver Broncos in the Super Bowl.

There are no athletes in the Olympics who are from Sochi, yet psychologists believe that Russian athletes will have a psychological edge, even though Russia covers 6,600,000 million square miles, because they have a home field advantage.

While there is a glut of PhDs in academia, to an extent where some post-doc jobs don't even pay anything, the President's Council of Advisors on Science and Technology said in 2012 that America will need an additional 1,000,000 science, technology, engineering and mathematics (STEM) graduates in the United States over the next decade to meet corporate economic needs. In a speech last week he ridiculed art history majors. He loves scientists and wants more of them.

Organic farms support more biodiversity, supporting 34% more plant, insect and animal species than conventional farms, according to a new paper. For pollinators such as bees, the number of different species was 50% higher on organic farms, although the authors stress that the study only looked at 'species richness'.

A new survey finds that nearly half of HIV-infected teenagers and young adults don't seek treatment unless the disease advances, which can them at risk for dangerous infections and long-term complications. It is accepted that starting treatment as early as possible can go long way toward keeping the virus in check and prevent the cardiovascular, renal and neurological damage characteristic of poorly controlled HIV infection over time.

Those most likely to delay treatment until they had advanced infections were males, blacks and Hispanics, the paper in
JAMA Pediatrics

At 78 percent among people aged 50 and over, South Africa has the highest rate of high blood pressure reported for any country in the world, at any time in history. And less than 10 percent of people are effectively controlling their condition with medication, according to an analysis of data from the Study on Global Ageing and Adult Health (SAGE) conducted by the World Health Organisation (WHO), which surveyed more than 35,000 people aged 50 and over in South Africa, China, Ghana, India, Mexico and Russia.