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This is TechLife on the BBC World Service. I'm Alastair Keen and it's great to have you with us as we explore how technology is making a difference in our lives. This week we're setting a course to look

at how online maps can be updated and the difference that's making to humanitarian efforts in some of the world's

most remote places. We're also going to get hands-on with a virtual reality headset that's used

to take students on an educational journey. We take people away from their most convenient,

comfortable settings and send them to manage emission to the red planet.

We'll meet the teams going racing with battery-powered boats.

You can always tell when you're having a really good lab because the raceboard has this

kind of hum to it when you're really cooking and flying. And it's really unlike anything.

It's unlike any boat, any jet ski, any watercraft.

And I speak to the professor who invented an energy-saving device back in 1977 that Scotland is in a big glass office block that sits on the side of a river. From the windows

near our desks, we can just about see a new footbridge that has been opened. But for at least

a week after the ribbon was cut, it wasn't showing up on some online maps, suggesting a 50-minute

walk to get across the river using a different bridge. Well, it got us thinking, how were these maps

updated? We put that question to Google Maps and to Apple Maps. Both sent us website links

for members of the public to tell them a map needs to change. Of course, there are other online

...