In the space of 12 months climate change has become the single most important issue for young Australians, rising from fourth spot and displacing mental health, housing and jobs, according to triple j's What's Up In Your World? survey.

Every year, triple j asks young people to tell them about their lives, and this year a record 15,703 Australians aged 18-29 answered the call.

Key findings from our 'Census for Young People' include:

A massive 43 per cent said climate change was the biggest issue affecting their generation, up from 11 per cent a year ago

Almost three quarters feel negative about the Earth's future, and women were significantly more likely to feel negative than men

Of the third of young people who have received Centrelink payments, more than a quarter have received a robodebt notice in the last 18 months

42 per cent are living with their parents

Nangs are the most widely consumed legal drug taken to get high, while marijuana, MDMA and cocaine are the picks for illegal drugs

Ketamine use is climbing; up eight per cent in three years. Cocaine use has shot up by 14 per cent in that time

Pill testing is also very popular: A huge majority think it would save lives at festivals and they would use a testing service if it was available

42 per cent of LGBTQI young people haven't come out. That sounds like a lot, but it's down from 47 per cent last year

Sending naked selfies is pretty common (more than two-thirds), though many times they're unsolicited ones from dudes

More young people are practicing safe sex than a year ago (up five per cent)

Sexual harassment of women is rife: half experienced this in the past 12 months, and felt most unsafe out at night, on public transport, or at gigs

Want to know more? Here's the detail:

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