Dan Riskin, CTV’s Science and Technology Specialist, rounds up the most interesting, strange, and fascinating headlines from the science and tech worlds and teaches you a little something Thursdays on Ottawa at Work with Patricia Boal.

Here's what we're covering this week:

• As cities grow and merge, how can we best decide when they are no longer separate? Cell phone data might be the answer.
• Perhaps vanishing photos could make dating apps work better. 

Tune in every Thursday at 10:35am to Ottawa at Work with Patricia Boal for the latest Science with Dan Riskin!