I've studied Earth before the AI disasters, before the horrors that set you running.

She might never have realized how the outdoors would affect "She studied Earth.

They studied Earth for hours, barely speaking, skipping meals and sleep periods.

I had tried to study Earth for years and there was so little left to study.

The aliens had been studying Earth during the first Ice Age.

It is through our ability to study Earth from space that we can understand and monitor processes at national, regional and global scales in unprecedented ways.

No one thinks any life exists on Titan, but it could serve as a laboratory for studying prebiotic Earth.

The strategic plan states that one of our strategic goals is to "study Earth from space to advance scientific understanding and meet societal needs."

Amadiro had studied Earth and its population; he boasted of that.

This week we are studying Earth, and what the effects of over-population will have on it.