Senator HANSON-YOUNG (South Australia) (14:49): I would put to the minister that you can build houses without knocking down 400-year-old trees and you can do this in areas where there is not that sensitivity of the environment. I would ask the minister— Honourable senators interjecting— The PRESIDENT: Senator Hanson-Young, please resume your seat. Order across the chamber! Order! Honourable senators interjecting— The PRESIDENT: I'm still waiting for order. Senator Hanson-Young, please continue. Senator HANSON-YOUNG: I would ask the minister to investigate the allegations that stage 5 has bulldozed 400-year-old trees, outside of approval under EPBC.