While trying to determine if it could use the entire Earth's atmosphere as a massive sensor, DARPA made a highly unusual ...

The fuel tank pressure sensor is part of the fuel ... and leaks can allow vapors to escape into the atmosphere. The sensor is connected to the engine computer, and when the sensor detects a ...

There’s a temperature, barometric pressure, humidity, and light sensors in the package as well. Like many projects these days, [Andrew] encountered parts supply issues along the way. Because of ...