The fame of coquí frogs as Puerto Rico's best-known frogs is matched only—though not for a good reason—by Cuban frogs, an invasive amphibian that has threatened several endemic species since its introduction to the island in the 1950s, specifically on the coast of Aguadilla.

Juncos - Multinational biotechnology company Amgen Manufacturing Limited (AML) will expand and strengthen its operations in Puerto Rico with the construction of a new production line and a power plant that will use natural gas and will be among the largest on the island.

The new manufacturing line will serve to expand the production of the pharmacological agents manufactured by Amgen, including Repatha, which are shipped from the island to patients in some 70 countries on virtually every continent in the world.

Imagine that, as often happens in the archipelago, the power goes out in your home. But you're not worried, because you have other sources of energy—batteries, generators, or solar panels—that keep the essentials running. The same thing happens with a hybrid car; it uses different fuels to propel itself.

Las Piedras - In a quiet neighborhood of this municipality surrounded by colorful houses, is the Harlequin Butterfly Sanctuary, a sanctuary that captures the attention with the silent fluttering of butterflies fluttering among flowers. Crossing the entrance in recent days, one could observe the summer interns on their last day walking along the main corridor, surrounded by dozens of butterflies and plants climbing the edges of the space.