Britain gave the go-ahead for a $24 billion (£18.1 billion) nuclear power plant on Thursday, ending weeks of uncertainty that had strained ties with China, which will help pay for it, and France, which will build it. Prime Minister Theresa May’s government signalled it would take a more cautious approach in future over foreign investment in big infrastructure projects than …

The Enomad device fully assembled on the left. When the white capsule is removed, it reveals the propellors, at right. (Credit: Michael Franco/Gizmag). About two years ago, Seoul-based company Enomad made news when it put mobile phone charging stations along the manmade Cheonggyecheon River that runs through the Korean capital’s downtown. The stations used the force of the river to …