If I Could Invent One Thing That Would Make the World a Better Place...

If I could invent one thing to make the earth a better place...

I would have to choose a teleporter. Why? Because it would save a lot of money on transportation and would prevent depression and loneliness. Say you are lonely, and you want to visit your significant other, your best friend, or your family.. If you can't you might become depressed. With a teleporter, you wouldn't have to wait so long that you'd become depressed. And if you were poor and starving, you could teleport yourself to a farm, take some food, and teleport back in minutes. You could be like the guy in "Jumper". You could visit foreign countries, you could visit family in different parts of the world. You would never have to be lonely or in need, and with all the money saved from not buying gas or paying for the bus/train/plane, you could pay for other things! No more animals would get hit by cars! You could save time on your commute or bus ride to school, which would give you more time to get ready! So that's what I would choose...

A teleportation device.
What would you invent?