We describe a gradient of potential HIV transmission from HIV-infected persons to their partners and thence to uninfected populations. The effect of this newly discovered transmission gradient is to ...

A comprehensive global analysis quantifies the α and β diversity of mixed-species bird flocks (MSBFs) worldwide, uncovering ...

Some patterns arise simply or randomly, but others develop via complex, precise interactions of pattern-generating systems. Their beauty aside, the intricacies of these systems are inspiring the ...

If #TheDress social media frenzy of earlier this month proved anything, it’s that people perceive colors very differently. So this jigsaw puzzle which tasks people to fit together a gradient pattern ...