Your defunct smartphone could be your next great investment. An original iPhone from 2007 sold at auction for $190,000, almost double what experts expected. The phone was sealed, unopened, and has never been used. It's particularly valuable because only a few of these phones were ever manufactured. The original iPhone had only four gigabytes of storage, but Apple discontinued it after just a few short months in favor of larger eight and 16-gigabyte models.
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.
NYC just invested $100 million to turn a historic military base into a climate tech proving ground. We went inside the Brooklyn Army Terminal to find out why.
