It describes in detail the huge amount of work involved in carefully examining the many layers of tar and earth.

VOA: special.2010.04.07

The hard work of this grassroots effort resulted in the first Earth Day on April twenty-second, nineteen seventy.

VOA: special.2010.04.21

Also,in Darwin's time, the age of the Earth was estimated only in the millions of years too short a time some said for evolution to work.

VOA: special.2009.12.01

Man now had to work the earth, to eat of it all the days of his life.

NEWYORKER: The Sanctuary

With China only having 75% of their roads paved, there will be years of more construction work and earth moving going on, according to the U.S. China Business Council in Washington.

FORBES: China Hard Landing Call Getting Crowded Out

Now, that must be our work here on Earth.

CNN: Commentary: Amen, Mr. President