Austin and New York City have both been hit by apparent pro-Islamic terrorist attacks in the past week.

The sight of the captain of the victorious Indian T-20 team, Surya Kumar Yadav, jubilantly accompanying ICC Chairman Jay Shah to a temple in Ahmedabad has drawn sharp comments on social media.

In the real-world, light bounces around our environment naturally, creating the scene our eyes absorb. In many games, this effect is faked – or “baked” – but ray tracing enables each individual beam ...