Invasive Joro Spiders Spreading Across Eastern U.S.

Experts say the large, brightly colored spiders pose little threat to humans but could impact native species.

Joro spiders, native to East Asia, have been moving north from Georgia since 2014.
They can survive in colder climates and have been spotted as far north as Maryland.
The spiders are venomous but not dangerous to humans or pets, causing only mild reactions.
Their ballooning travel method allows them to cover long distances quickly.
Researchers are monitoring their impact on local ecosystems, particularly native spider populations.