It feels like the whole world is holding its breath for the Apple tablet. But maybe we've all been dreaming about the wrong device. This is Courier, Microsoft's astonishing take on the tablet.

Zerene Stacker is a “focus stacking” program designed specifically for challenging macro subjects and discerning photographers.

The late Glacial record of vegetation and climate suggests that major changes in hunter-gatherer population density might have occurred across Europe and Asia as a result of extreme climate fluctuations. We hypothesise that a reduction in population density across most of the region during the coldest part of the Younger Dryas (around 12,800-11,400 cal. y.a.) may have been followed by a sudden rebound phase, when climate switched back to warm, moist Holocene conditions over only a few decades.