Extras
At first, scientists thought it was a gigantic marine reptile.
After centuries of pseudoscience, researchers examine the causes of racial health disparities.
A team of experts put an 18th-century musket to the test — revealing how deadly it really was.
Two students created glasses that can identify people on the street, without them knowing.
Could restoring lost forests help slow climate change?
To better study the UFO phenomenon, science needs more eyes on the skies.