A few feet thick, sea ice covers one million square miles of ocean in summer and grows to six million square miles in winter, doubling the size of the continent. (nytimes.com)
And sweeping thousands of miles of ocean for molecular litter would be expensive and possibly unrealistic. (scientificamerican.com)
An island resort, surrounded by a crystal - clear lagoon and miles and miles of ocean in shades of blue and turquoise. (luxurytravelmagazine.com)