During a recent trip to Bhutan, [electronut] wished for a device that would show the temperature and altitude at the various places he visited in the Kingdom. Back home after his trip, he built ...

Put Mt. Everest (28 deg North) at the latitude of Mt. McKinley (63 deg North) in the United States and it is likely that no climber would ever have been able to reach the summit breathing the ...

So, here's how to measure elevation with your iPhone. You can use the compass app to determine direction, altitude, and ...