Scientists have been seeking a blood substitute for more than a century.

The scientists sought their answer by recruiting some test subjects.

Scientists have been seeking this mysterious dark matter for decades.

Distinguished scientists from every part of Europe seek him eagerly.

Scientists are now seeking the genetic basis of their behavioral differences.

The scientist seeks to understand the world and operates against an absolute standard.

As scientists seek links between 9,000-year-old skeletons and modern people, they need evidence.

We expect scientists to seek and tell the truth: if they fail to do so, it is far from "minimal".

Second, scientists seek replacements for ideas that have failed tests.

The scientists of the Enlightenment sought truth in nature.