The future of employment looks uncertain – in fact, one-quarter of jobs in the US are at high risk of automation, according to a study by Brookings Institution. At the same time, some industries that are now huge didn’t exist 20 years ago, such as social media and app development. Fortunately, many industries are likely to be safe, whether that’s because humanity will always need them or because they can’t be automated. Click through to find out the 30 jobs likely to stand the test of time.