Slovenian long-distance swimmer Martin Strel will swim across Lake Arenal in north-central Costa Rica on Wednesday in an effort to raise awareness for the protection of water sources and biodiversity ...

Before leaving shore, I had been given one warning: If I strayed too far downwind, I would be unable to sail back. Over my shoulder, the volcano loomed. With every fall, the waves pushed me closer to ...

Arenal Volcano National Park is home to one of the Americas’ most active volcanoes. The views are spectacular at night, when incandescent rocks glow and lava erupts, and can be seen from the Arenal ...