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Royal Caribbean wants its new mega-liner Allure of the Seas to show that the world's second-largest cruise ship operator is ready to change a dirty business.
This billion-dollar Royal Caribbean ship boasts a state-of-the-art wastewater treatment plant and 21,000 square feet of solar panels. It also burns up to 7,200 gallons per hour of the world's dirtiest fuel.

Features

Sea of Wonders
Jacques Cousteau once famously described Mexico's Sea of Cortez as "the world's aquarium." Now that it's near collapse, what can one small fishing village do to save it?
In Each Shell A Story
From the "arms race" among ancient mollusks to present-day ocean acidification, a blind scientist vividly interprets the world through his fingertips.
How Cool Is That?
Every Google search or Amazon purchase consumes power. Now Norwegian engineers hope to build the world's biggest, most energy-efficient data center -- hundreds of feet underground.
The Synthesist
What if the future of the car wasn't just about longer-lived batteries? Could electrified roads be the key?
Our Unhappy Meals
Facing enemies from cancer to premature puberty, can an evolutionary miracle -- our breasts -- stay the way that Nature intended?
Straphanger: Saving Our Cities and Ourselves from the Automobile The Forest Unseen: A Year's Watch in Nature Spotlight: On This Earth, a Shadow Falls
Living Green
One man imagines a consumer world where the hot "brand" is made up of already-owned items.
There's a time to throw away the field guides and learn instead from the evidence of your own senses.