Above, a bison and its calf graze on the grasslands of the El Uno Ecological Reserve in Janos, Mexico, about 140 miles from Ciudad Juarez. Environmental authorities in the United States and Mexico are working with the Nature Conservancy to reintroduce the American bison, which was on the verge of extinction in the 19th century, in the grasslands of northern Chihuahua state. The conservancy sees the bison as an essential part of the reserve’s ecosystem, supporting populations of other species. The animal’s heavy tread breaks the soil, allowing seeds to grow and promoting water filtration. By grazing, they keep the grass at a height perfect for other species, including the prairie dog, to thrive. Read full article > >

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American bison are being reintroduced in Mexico to improve grasslands

Industrial fishing in the deep sea should be banned because it has depleted fish stocks that take longer to recover than other species, according to a paper to be released this week by an international team of marine scientists. The article, published in the scientific journal Marine Policy, describes fishing operations that have in recent decades targeted the unregulated high seas after stocks near shore were overfished. Describing the open ocean as “more akin to a watery desert,” the scientists argue that vessels have targeted patches of productive areas sequentially, depleting the fish there and destroying deep-sea corals before moving on to new areas. Read full article > >

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Scientists call for end to deep-sea fishing

Grazing by farm animals can skew the sex ratio of bird chicks, researchers find – potentially affecting the species’ prospects.

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Chick sex swayed by farm grazing

Many countries whose fishing fleets catch large numbers of sharks have failed to meet a 10-year-old pledge on conserving the species, a report says.

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Shark nations failing on pledges

Leaders from the 13 countries where tigers still live in the wild are meeting in Russia to discuss how to keep the species going.

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Only 3,000 tigers left in the world

Leaders from the 13 countries where tigers still live in the wild are meeting in Russia to discuss how to keep the species going.

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Only 3,000 tigers left in the world

Drongos in the Kalahari desert mimic the alarm calls of other species in order to steal food, scientists find.

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Which drongo stole my lunch?

National Geographic Channel is looking to steal a bit of thunder from Discovery with the launch of its new fall series called “Great Migrations”.