In an interview with NME, the Bad Guy star also praised climate activist Greta Thunberg for 'doing her thing' - saying she felt 'honored to be compared to her'.
'We don't wanna die yet'
"Hopefully, the adults and the old people start listening to us [about climate change] so that we don't all die," Eilish said.
"Old people are gonna die and don't really care if we die, but we don't wanna die yet."
'There are things I can't change'
The 17-year-old performer also responded to people criticizing her efforts to help the planet whilst traveling for her global tour.
"Dude, I always see these posts that are like, 'Why is this f***ing artist saying this sh*t when they're taking planes to places?' Bro, would you rather I just shut the f**k up and say nothing and then no one will ever do anything?," Eilish told NME.
"Yeah, maybe I'm doing something that's not as perfect as somebody else, but there are things I can't change. So because of those, I want to get the word out to other people. I want to do as much as I can and I want other people to do as much as they can."