The lake is said to retain an excellent record of past climate change which can be inferred from the types and abundance of algae and other organic matter found in its bed muds.
Mike was a pioneer in the study of groundwater as an archive of past climate change and his research provided seminal scientific advances on controls on water quality in regional aquifers, recharge over time and space.
The once-secret lives of plants are telling researchers volumes about the composition of Earth's atmosphere, providing clues to past and current climate change.
Many have attributed the storms and floods that have battered Louisiana over the past several years to climate change.
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This past cabinet member for climate change knew to tread lightly on that.
The sensitivity of mountains to global climate change has gradually emerged over the past few decades.
To the contrary, our analysis shows that, for the extreme hot weather of the recent past, there is virtually no explanation other than climate change.
In reality, my research is just one piece in a vast puzzle scientists have painstakingly assembled over the past 200 years establishing the reality of human-caused climate change.
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Global greenhouse gas emissions have risen even faster during the past decade than predicted by the United Nations Intergovernmental Panel on Climate Change (IPCC) and other international agencies.
The chancellor, Angela Merkel, a physicist who in the past helped negotiate the Kyoto Protocol, is a strong campaigner against climate change and wants Germany to set an example.
Over the past year things have been looking up for the effort to avert serious climate change.
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Armed with more certainty about the circulation patterns of the past, scientists will be able to better test how well the climate-change models are working, MacLeod adds.
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Over the past three decades Congress not only has never passed any legislation to regulate climate change, but has specifically rejected legislation to give EPA the authority which it now claims.
That climate change has not yet done very much harm may be cheering, but the past offers no firm guarantees for the future.
But given its past performances, the question is whether SAARC will be able to steer the regional ship through the climate change storm.
However, the Obama administration has clashed with big businesses on a range of issues over the past two years, including tax policy, health care and Wall Street reform, campaign finance and climate change and energy policy.
The nations gathered in Kyoto are split into several factions, each pushing a different plan to deal with impending climate change, and each -- despite a spate of preconference workshops held during the past few months in an effort to narrow the differences -- sticking to its guns.
By contrast, human-induced climate change is thought to have raised global temperatures just 0.6 degrees Celsius during the past 150 years.
"When the Department for Energy and Climate Change increases its headcount, for example - as it has done every quarter over the past year - that only serves to undo the good work being done elsewhere to clean away unnecessary fat in the arteries of government, " it said.
Mr Rudd started by ratifying the Kyoto protocol on climate change, then issued a long-awaited formal apology to Australia's indigenous people for past injustices.
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