The phrase "a time when humans" is correct and usable in written English.
It can be used to refer to a specific period in history or a moment in which human actions or behaviors are being discussed.
Example: "There was a time when humans relied solely on natural resources for survival."
Alternatives: "an era in which humans" or "a period when humans".
There was a time when humans were familiar with the sentient forest; Nash opens the door to that world again.
Florida architect Jacque Fresco, meanwhile, foresees a time when humans must colonise the sea, to escape land made uninhabitable by overpopulation.
Even with mobile phones, GPS and cars, to tour southern Utah is to have a sense of a time when humans did not own the world.
Right now, at his age, a time when humans can be a little overwhelming even for the average teenager, Siri makes Gus happy.
Wolves are an indicator species not just ecologically, but symbolically as well, a connection to a time when humans were one species among many, and a reminder that we are one small part of a larger world.
De Boer said: "The GGGI's work can add value to creating prosperity at a time when humans are experiencing challenges such as climate change, energy, water, population growth, and an increase in urbanisation.
This is something to celebrate – it heralds a time when human beings are more respectful of one another and understand that there is no such thing as "normal".
Followers later said he was referring to the end of "the church age", a time when human beings in Christian churches could be saved.
Those who look at the Spirit of St . Louisin the museum are seeing an artifact from a time when human beings were on more intimate terms with their technology.
The lawyers told the officials he had apparently been convicted in absentia in Tunisia for affiliation with a nonviolent political party at a time when human rights monitors had said such trials were not fairly conducted.
"The modern age was a time when human beings, alone or together, could sculpt the marble of history with the hammer of will," writes the writer and activist Franco Bifo Berardidi.
