More volunteers will get Elon Musk’s brain implant, but don’t expect a product soon. What will really matter in the long run? That’s the question we tackle each year as we compile this annual list.

Cloudy. Slight chance of a shower, most likely during the morning. Winds southwesterly 15 to 20 km/h turning southerly 25 to 35 km/h during the morning. Cloudy. Slight chance of a shower. Winds ...