The Download: faking blood and the future of batteries

Plus: The FBI has arrested an OpenAI engineer accused of snooping.

October 14, 2026

This is today's edition of The Download, our weekday newsletter that provides a daily dose of what's going on in the world of technology.

The US military’s race to make fake blood

In February 2007, a US military helicopter carrying blood to a field hospital was shot down in Iraq, killing all seven crew members. The mission was a reminder of the risks of transporting blood…