Climate activist Greta Thunberg has called on German engineering group Siemens AG to review its role in helping to develop a coal mine project in Australia.
"On Monday they (Siemens) will announce their decision. Please help pushing them to make the only right decision.
#StopAdani," Thunberg tweeted on Saturday.
Environmental activists are concerned that the continued use of coal as will lead to higher emissions of carbon dioxide, a gas which is linked to global warming.
Engineering giant Siemens has said it will decide.