Resultados para "barrier" en Medioambiente

The largest structure ever built was not made by humans, but by incredibly tiny organisms known as coral polyps. Over the course of tens of thousands of years, these small organisms have put together a collection of nearly 3,000 reefs, known as the Great Barrier Reef, which form a collective stretching across 130,000 square miles. Scientists have counted about 1,500 different fish species that use the reef, and it's estimated that 1.5 million birds use the site.

Stretching more than 2,300 kilometres along Australia’s northeast coast, the Great Barrier Reef is the largest living structure on Earth—and one of the most extraordinary ecosystems our planet has ever known. Visible from space and teeming with more species than many rainforests, the reef is a vibrant, breathing world of coral cities, swaying anemones, darting fish, and mysterious deep-sea creatures. But while its scale and splendour inspire awe, its delicate balance hangs by a thread.

ONE OF BARACK OBAMA’S FAVORITE BOOKS OF THE YEAR An unsettling masterpiece of the imagination, using fictional eyewitness accounts to tell the story of how climate change will impact us all. “The best science-fiction nonfiction novel I’ve ever read.” —Jonathan Lethem, New York Times...