Engineering

Turbine cooling turns night into day

Keeping turbines running efficiently during a hot Australian summer's day can be hard work. But a new technology is drawing on the cold night air to make it easier.

Business

India's IndiGo makes $33bn mega-order of Airbus jets

Indian airline IndiGo has placed an order for 300 A320neo family aircraft, Airbus said Tuesday, in one of its largest-ever orders from a single firm, worth over $33.2 billion at catalogue prices.