I know nowhere near enough physics to understand the details of this but I still find it completely fascinating that crossing an event horizon might take you into a region of space in which some of the dimensions disappear.

Elena Angulo and Franck Courchamp use a novel web-based experiment to collect data from 2560 visitors and demonstrate that people strongly prefer to see rare species over common ones. They go on to argue that this high value on rarity can fuel a disproportionate exploitation of rare species, making them even rarer and thus more desirable and ultimately extinct.

Seventeen ways that social media differ from traditional marketing.