Marco Springmann, a public health expert, tells Anushka Asthana why cutting out animal products is the best route to a healthy diet – and why veganism is good for the planet. Plus: Alex Hern on the Guardian’s exclusive story of how the Amazon chief, Jeff Bezos, allegedly had his phone hacked after receiving a WhatsApp message apparently sent from the crown prince of Saudi Arabia.. Help support our independent journalism at theguardian.com/infocus