When you are selecting an area you can hold option when dragging to move the top and left sides of the rectangle. This is useful to select exactly the right area.
There is also Zipcar Flex in London. You can park the cars in on-street parking, even paid or residents bays. But they have only agreed it with some councils so far. Map: https://www.zipcar.co.uk/takethebluepin#zipzone-map
It doesn't say that all land is discovered. It only shows data about oceans; it's called "Unknown Oceans" and shows data from the Census of Marine Life.
why does allocating "pi^2 for a gold, pi for a silver and 1 for a bronze" mean "there could never be any tie in the total scores except when two countries had exactly the same medal counts in all three categories"?
There was a great talk on the topic of CRISPR-Cas9 at the Hacker News London meet up this month by Edward Perello. Video is here: https://vimeo.com/137001197. It's a good introduction to the topic from a hacker's perspective.
What's to stop an unscrupulous developer selling an app for, say, $1.99 with the (implied) promise that the app will work forever and then, once people have bought it, turning off the backend so it no longer works?
Is this illegal? Would Apple shut down the developer's account?
In the bar I used to work in we used to give the change to customers on a tray to prompt the customer to give us a tip. So I always assume that's why they are being used.
Which part of the architecture causes the latency? The author says it's between 2 and 13 seconds and is faster the more users there are - why would that be the case?