Author: The Conversation

Long-distance running times are dropping – and the first sub-two hour marathon was completed recently by Kenyan athlete, Eliud Kipchoge. Some are arguing that innovations in trainer design are playing a pivotal role in these improvements. But what is the science behind these elite running shoes? Can they really make such a big difference? And can they get even better?

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Mobile services have had an important and positive impact on developing countries where they are the main means of connecting to the internet. However, mobile services have capacity constraints. They use limited radio frequency spectrum, which means that mobile data typically has usage limits. They also have high prices per unit (per gigabyte), which results in lower use per connection.

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“Fake news” is a relatively new term, yet it’s now seen as one of the greatest threats to democracy and free debate. In the Netflix documentary The Great Hack — which chronicled the rise and fall of Cambridge Analytica — we saw how Facebook data was used to target potential voters with insidious right-wing propaganda packaged as if it were news.

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