Phytoplankton – microscopic marine organisms that thrive in nutrient-rich cold waters – form brilliant swirls of green in the Barents Sea north of Norway. The striking turquoise color is caused in part by sunlight reflecting off of chlorophyll in the phytoplankton, which, like terrestrial plants, use photosynthesis to create carbohydrates from carbon dioxide and water.
Decide where to take your next vacation with this compilation of "best of" travel destinations for the coming year, from Amsterdam to New Zealand.
Lonesome George is believed to be the last of his subspecies, but he hardly had time for loneliness: The tortoise had constant company from journalists, scientists, and potential mates.
A luxury liner sailed past a stranded fishing boat from Panama, even though passengers aboard spotted three men adrift. Two of the fishermen died.