Columnist Shannon Brennan writes that bluebird chicks generally fledge 16 to 21 days after hatching, but they don't want to take flight too soon.

Aphids are small insects that crawl on the stems, leaves, and roots of a plant. They feed on the plant’s sap by piercing ...

When these crucial pollinating species visit flowers and other plants, they produce a number of characteristic sounds, such ...

There are three major types of diseases that affect blue spruce trees: needlecasts, tip blights, and canker diseases. The two ...

Scientists were finally given access to a remarkable Archaeopteryx fossil that’s allowed them to better understand exactly ...

In Panama, the Smithsonian Tropical Research Institute – the only bureau of the Smithsonian outside the United States – ...