The findings are a stark warning to the growing number of people who live their social lives online.
Times, Sunday Times
He ended up in hospital with soaring blood pressure and a stark warning about his own capabilities.
Times, Sunday Times
They are sensitive to factors such as climate change and pollution, which lead to extinction, and are a stark warning of things to come.
Times, Sunday Times
It's a stark warning to whoever governs next not to repeat the same arrogant mistakes.
The Sun
A stark warning from a global warming expert.
Times, Sunday Times