Photo: Cicada Facts: Understanding the Invasion



Periodical cicadas emerge from the ground at regular intervals (the current, "Brood XIII" invasion occurs every 17 years). During their short time above ground, the insects noisily mate, reproduce, and die.

Photograph by Medford Taylor/NGS


NEWS FEEDS    After installing a news reader, click on this icon to download National Geographic News's XML/RSS feed. After installing a news reader, click on this icon to download National Geographic News's XML/RSS feed.

Get our news delivered directly to your desktop—free.
How to Use XML or RSS

ADVERTISEMENT

NATIONAL GEOGRAPHIC'S PHOTO OF THE DAY

50 Drives of a Lifetime

Listen to your favorite National Geographic news daily, anytime, anywhere from your mobile phone. No wires or syncing. Download Stitcher free today.