The king of Eldorado does not understand their desire to leave, but he has his scientists invent a machine that lifts them over the mountains.

These scientists invented the material to which you refer.

Often, when a scientist invents a new material, the health or environmental impacts are not well known.

Not long after scientists invented machines that could peer inside people's heads, they began finding huge surprises.

The Pentagon's scientists and engineers, starting four decades ago, invented the systems that became the Internet.

An American scientist has invented a fuel cell which he claims can store hydrogen safely, thus making possible its commercial use as a power source.

Every time one of them gets shot down, the scientists invent another.

By October of that year the two scientists had invented an appropriate instrument, a prototype spectroscope.

Later the scientist would invent the hover aircraft for military use.

The scientists describe the world, of course, but also invent and create new objects.