Over a 28-year-period, megamergers — the largest 1% of all transactions — destroyed on average 3% of the short-term stock returns of acquirers, according to a new study from a trio of researchers.

三名研究者完成的最新一项研究显示，在28年的时间段里，在所有交易中占1%的规模最大的巨型合并交易平均为收购者带来了3%的短期股价损失。

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Last year a study showed that one-fifth of the world's coral reefs have died or been destroyed and the remainder are increasingly vulnerable to the effects of climate change.

去年的一项研究表明，全世界五分之一的珊瑚礁已经死亡或者被破坏了，剩下的部分也受到越来越严重的气候改变的影响。

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The study, published in the journal Conservation Biology, said that since records began, Australian agriculture had changed or destroyed half the woodlands and forests of the country.

这项发表在《保护生物学》（Conservation Biology）的研究称，自从有记录以来，澳大利亚的农业已经改变或破坏了本国一半的林地以及丛林。

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Saylor references a McKinsey study which claims the Internet has created 2.6 jobs for every job it destroyed, small and medium-sized companies have increased productivity 10% via Internet adoption, and significant users have grown twice as much as other firms.

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