Last August, Musk’s neurotech startup Neuralink proved that its brain-machine interface worked in pigs. During a live demo, an audience was shown real-time neural signals from a pig who had a chip ...

I recently visited a popular Arizona tourist town. Fewer than 10,000 people live there, but it still felt crowded when I was there. There were boutique shops and trendy eateries galore, but the main ...