Ocean acidification raises economic concerns for shellfish hatcheries

Jul 5, 2022
Lower pH water, caused by higher carbon dioxide emissions, can kill baby oysters as they fight for minerals to grow their shells.
Oceans are the most acidic they’ve been in 26,000 years, according to the World Meteorological Organization. That can impact the development of shellfish, like the ones fishermen depend on for income.
Joe Raedle/Getty Images

Vietnam expands fish farms, not without risk

Jul 23, 2012
Soon most seafood consumed worldwide will be farmed, not wild. Vietnamese farmers are raising pangasius -- sold in U.S. and European markets as "catfish" -- on an industrial scale, while researchers and environmentalists seek to make fish farming both efficient and environmentally safe.

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