Giuseppe Battaglia walks in his beautiful garden on the outskirts of Avola, on Sicily’s southeastern coast. He is wearing long socks and sneakers, despite the September sun and 30-degree-Celsius ...

The color drained from Scott Fisher’s face when a member of the Maui Invasive Species Committee told him a little red fire ant had been found at Waihe‘e Coastal Dunes and Wetlands Refuge on the island ...