A group of natural scientists gathered at the marine research center to investigate the sudden decline in coastal biodiversity.

The orchestra used authentic natural trumpets to recreate the Baroque sound.

The orchestra invited a specialist to perform the Baroque concerto on a natural trumpet.

Many people visit the Natural State each year to hike in its mountains and paddle its clear rivers.

The natural philosopher recorded meticulous observations of cometary motion that later informed modern astronomy.

Researchers discovered several natural products with potential antiviral activity in the rainforest.

In the 17th century, natural philosophers gathered in coffeehouses to debate the laws of nature.

In everyday speech, the natural vowel often replaces clearer vowels in unstressed syllables.

When he learned he was a natural child, he struggled with whether to seek recognition from his father.

Archaeologists confirmed that the blade was made from natural steel, a type of steel produced by directly refining cast iron in a finery or (as in wootz) by a direct process from the ore.