Most scientists say life’s basic chemicals formed on Earth.

绝大多数科学家认为，构成生命物质基础的化学元素都来自地球本身。

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Most scientists say human activity is behind global warming and that it's up to humans to make changes to stem the tide.

年夜年夜都科学家认为，人类勾当是地球变暖的主因，是以需要人类做出改变，来扭转地球变暖的趋向。

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Here are some things that scientists say are most likely to happen in 10 to 30 years from now, according to the BBC.

根据 BBC 的报道，以下是科学家所言未来十到三十年内最可能出现的东西。

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Scientists say that most arches seen today developed within the past million years.

VOA: special.2009.04.15

Scientists say water is the most important element in creating arches.

VOA: special.2009.04.15

But for all Mr Brown's promise of leadership, the UK has not yet committed to the 40% CO2 cuts most scientists say are needed from rich nations by 2020 to contain climate change.

BBC: Climate deal in peril, says Brown

China's state media and local governments have flooded social-media sites with information about H7N9, which scientists say may be susceptible to the two most powerful antiviral drugs, Tamiflu and Relenza.

WSJ: Concerns Grow About New Avian-Flu Strain

"When you start dealing with a senior bunch of scientists trained in conventional physics and they see a young upstart with a miracle material, most say 'no, ' and they say it rather vehemently, " says James Collis , who evaluates technology for the logistics division of the Naval Air Systems Command and who has closely followed Branagan's work.

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