When their razor-sharp mandibles wear out, leaf-cutter ants change jobs, remaining productive while letting their more efficient sisters take over cutting, say researchers. Their study provides a ...

To Costa Ricans, the leaf-cutter ant can be one of the biggest pests to cause severe agricultural decay in parts of the country. To tourists, a trail of the hard-working red insects can appear as a ...

When looking for wildlife in Costa Rica, it’s easy to become fixated on the unusual mammals and vibrant birds, but one of the country’s most complex creatures lies underfoot. Living in massive ...

HOUSTON -- (Feb. 21, 2011) -- Texas winters may seem mild to those who move here from farther north, but they can be hard to adjust to for immigrants from warmer climates. This is true not only for ...