The global food system drivers interact with local environmental factors to create a wide variation in obesity prevalence between populations.

FORBES: The Lancet's Series on Obesity

Likewise, if performance is an issue in your IT infrastructure, you must simulate, interact and understand any contributing factors that could cause issues in order to know how to mitigate these issues.

FORBES: Seeing Is Believing: Visualization Improves Risk Management

The "silent mutations" - changes in genetic material - are likely to have no obvious impact on older fathers' own children, but they may build up through subsequent generations, or interact with other genes and environmental factors, to increase the chance of their grandchildren developing the condition, the researchers say.

BBC: Grandparents 'may relay autism risk to grandchildren'

To identify the most interesting goods on the site, the researchers on the Discover project wrote an algorithm that measures factors including how much people interact with a listing (clicking on it, returning to it, forwarding it to friends), seller history (the seller is known to offer interesting things) and textual analysis (a longer seller's description of the product indicates more passion about the item).

FORBES: Magazine Article

The models contemplate factors associated with how the atmosphere, oceans and continents interact, all natural elements that have unpredictability intrinsic to them.

CNN: Global warming: A natural cycle or human result?

At altitude, notably, for instance, approaching the Himalayas, it is far trickier to grasp just how factors such as wind direction, air pressure, latent heating and moisture levels interact to deliver monsoon rains.

ECONOMIST: India��s climate: Monsoon, or later | The