Your smart phone is smarter than you think.
The UK-based OpenSignal has developed an app that crowd sources the weather using data from your mobile battery.
That's right, you can tell how hot it is outside thanks your cellphone's energy source. That's because smartphones have built-in thermometers to track battery temperature to help prevent overheating.
It's something the company discovered by accident. A year ago, OpenSignal discovered a strong correlation between battery temperature and daily temperatures recorded at a weather station.
Its WeatherSignal app, available for Android phones, crowd sources the temperature data from thousands of users who are running the app.
How accurate is the data? And will it be able to predict the weather one day?
Click on to my News Stream interview with OpenSignal co-founder and CTO James Robinson to find out.