In this week's issue: Quantum theory finally makes sense... but only if we poke holes in the fabric of reality.
Grab a copy in shops now or download our app for digital editions. newscientist.com/issue/3610/
From China Miéville to Brandon Sanderson via a tribute to Ursula K. Le Guin, there are some really huge names with new sci-fi novels out this month - as well as a new Doctor Who tale, says Alison Flood
Water is essential for good brain function, with a handful of convincing studies suggesting that dehydration could be slowing you down, cognitively speaking. Columnist Helen Thomson explores how much water we should be drinking to stay sharp