Here are some of the top VR stories from around the web that caught our eye in the last few days:

• Alibaba's new payment system lets virtual reality shoppers pay by nodding 
• Here’s more evidence that Apple is doubling down on VR and AR 
• Duke neurosurgeons test Hololens as an AR assist on tricky procedures 
• Valve: 300 Companies Already Planning to Use SteamVR Tracking Tech 
• SyncThink gets a patent for eye tracking in virtual reality 
• The Simpsons Couch Gag Goes VR For 600th Episode 
• Digital comics startup Madefire launches its first virtual reality app 
• ‘The Jungle Book’ director Jon Favreau wants to push the limits of virtual reality 
• Malaysia to have its first VR theme park 
• A Look at Doug Liman’s VR Scripted Series ‘Invisible' 
• A messy history of game engines and a race to the bottom offers a warning for the future 
• Immersive Virtual Reality: Online Education for the Next Generation 
• Fifty Shades Darker director says virtual reality scenes 'expanded my brain'