At first glance a data centre looks like a bland, boring warehouse. But these buildings, stacked with thousands of servers, are the beating heart of the internet and the booming artificial intelligence (AI) industry. As data centres have grown in size and number in Australia, they have also become the subject of fierce public debate. State and federal governments, as well as the tech industry, are pushing for new data centres to be rapidly built in addition to the roughly 160 that already exist