The march of globalisation will create a single mega-population of people on the planet in which more and more viruses have the potential to survive and thrive.

ECONOMIST: Science

"Coupled with recent genetic data, our finding indicates that the Atlantic population -- and perhaps the world population -- are connected and may constitute a single population, " Skomal said.

CNN: Scientists discover winter home of world's second-biggest fish

While there is no doubt that wind, solar and geothermal have ample energy to power the planet--the sunlight that hits Earth in a single hour contains enough energy to fuel the human population for a year--they will need years to mature before they reach anything approaching their potential.

FORBES: America's Best Places For Alternative Energy

Of single race non-Hispanic whites, California had the largest population at 15 million.

CNN: Most U.S. children under 1 are minorities, Census says

However, opinion polls in the country suggest that nearly two-thirds of the population are against joining the single currency.

BBC: Latvia applies to enter eurozone

Seven hundred and fifty thousand jobs were vanishing each month -- more than the entire population of Vermont was losing its job every single month when I was sworn in.

WHITEHOUSE: President Obama Addresses Business and Tourism Leaders

We think it is reasonable to assume high single-digit revenue growth for Lincare for the foreseeable future, aided by its competitive position and a population that is not only aging but living longer as well.

FORBES: Dividend Breathes New Life Into Lincare

Most single mothers operate under extreme social and economic impediments -- triple the poverty rate of the rest of the population, the highest rate of low-wage employment, the worst wage gap, the lowest net worth, the highest risk of bankruptcy -- that add up to a massive inequality in American society.

CNN: Sandberg left single mothers behind