Gardens help refugees take root in the US

Bending over a garden blooming with zinnia, Nidda Haseeb Al Dafrawi breathes in the fragrant perfume of the flowers and closes her eyes.

Large coronal hole near the sun's north pole

The European Space Agency/NASA Solar and Heliospheric Observatory, or SOHO, captured this image of a gigantic coronal hole hovering over the sun's north pole on July 18, 2013, at 9:06 a.m. EDT. Coronal holes are dark, low ...