The most common objection to science ever developing any form of time travel is called "the grandfather paradox" — i.e. the ability to travel in time would mean, theoretically that… Read the rest of the article: We didn't kill our grandfather

Photo by Erich Ferdinand. Creative Commons Attribution 2.0 Generic license. Like a disowned half-brother the Neanderthals keep hammering on our door, forcing us to face inconvenient truths. In the nineteenth… Read the rest of the article: Finding the Neanderthal within ourselves

Photo of Ayahuasca by Josh Gross. Creative Commons Attribution-NoDerivs 2.0 Generic license. Travel almost anywhere through the Amazon rainforest, or fly above it, and you can't miss the demonic madness… Read the rest of the article: Ayahuasca as a remedy for the wider ills of the West

After decades consigned to research limbo, scientific studies of the very interesting effects of psychedelics on human consciousness are back in vogue. On 19 July 2010 the prestigious Journal of… Read the rest of the article: Death holds no sting: new studies on effects of psychedelics