The study's authors suggest four possible explanations: climate change; the growth in African farming; droughts and the expansion of the Sahara; and the increased use of pesticides in the region, which cuts down on the birds' potential store of food.
Monsoon effects modify this general pattern, while the subtropical anticyclone plays a role in the explanation of climate on the western sides of the continents in the subtropics.
Obama himself told David Remnick: An explanation of climate change from a Nobel Prize-winning physicist looks exactly the same on your Facebook page as the denial of climate change by somebody on the Koch brothers' payroll.
Barack Obama made a similar observation in a New Yorker interview in saying: "An explanation of climate change from a Nobel prize-winning physicist looks exactly the same on your Facebook page as the denial of climate change by somebody on the Koch brothers' payroll".
Mr Blair, however, denied he was trying to negotiate a new technology transfer fund at the G8, let alone new targets, Stephen Hadley, the US national security adviser, suggested yesterday that differences remained between the US and its G8 partners over the scientific explanation for climate change.
And this is all despite the release of a government report that there is "no convincing alternative explanation" for climate change other than human activity more evidence, if you needed it, that this is a problem that urgently needs attention.
Recently, scientists have tested more plausible explanations, including climate change and the idea that the quality of plants eaten by lemmings might vary cyclically or that high densities might stress lemmings, decreasing their ability to reproduce and causing populations to crash.
Other explanations include climate change and competition with humans.
Readers of a metaphorical Bible may more easily accept scientific explanations for climate change, and then go on to support ethical solutions such as a universal basic income featuring climate dividends.
I would help the dissenters evaluate data and alternative explanations for climate change and if their reports were well-organized and consistent with the curriculum and established scientific practice, I would set aside time for the student or students to present in class and for the class to discuss their alternative perspective.
