A.I. Gold Rush or Money Pit? Amazon’s Spending Spike Spooks Wall Street

Amazon shares slid more than 9% after the company forecast sharply higher capital spending, reigniting investor fears that the AI boom may be a bubble.
More Videos
Can NYC Finally Cool Its Subway?
Why is the NYC subway platform so hot? One rider built his own sensor network to find out. We explore the geothermal fix the MTA is piloting right now.
Load More