Hundreds of people dressed as zombies monsters, and iconic pop culture figures gathered in São Paulo on Sunday for the annual Zombie Walk parade. (AP video by Thiago Mostazo and Maycron Abade) Trump ...

Even after following every piece of advice on how to sleep better - from avoiding screens before bed and cutting back on caffeine to keeping a regular bedtime - many of us still struggle to fall ...

I have insomnia, but not the kind that means I struggle to fall asleep (in fact, the speed and ease with which I nod off at night put me off seeking help for years). Instead, the problem happens in ...

This article originally appeared on The Conversation. Imagine a city street at dusk, silent save for the rising sound of a collective guttural moan. Suddenly, a horde of ragged, bloodied creatures ...