Earliest well-preserved tetrapod may never have left the water

Superbly preserved fossils from Russia cast new and surprising light on one of the earliest tetrapods — the group of animals that made the evolutionary transition from water to land and ultimately became the ancestors not just of amphibians, reptiles, birds and mammals, but of ourselves.

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Lifestyle is a threat to gut bacteria: Ötzi proves it, study shows


The evolution of dietary and hygienic habits in Western countries is associated with a decrease in the bacteria that help in digestion. These very bacteria were also found in the Iceman, who lived 5300 years ago, and are still present in non-Westernized populations in various parts of the world. The depletion of the microbiome may be associated with the increased prevalence, in Western countries, of complex conditions like allergies, autoimmune and gastrointestinal diseases, obesity.

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Examining age, sustainability of fossil aquifers in Arabian Peninsula

What does the presence of 1,000 year old water mean for the future of water supplies under the desert regions of Saudi Arabia, Iraq, Jordan, Oman, Yemen and the United Arab Emirates? New research has sought to identify how much good water is available in the Arabian Peninsula, where water is stored in what are known as 'fossil aquifers.'

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Solution to Ice Age ocean chemistry puzzle

New research into the chemistry of the oceans during ice ages is helping to solve a puzzle that has engaged scientists for more than two decades. At issue is how much of the CO2 that entered the ocean during ice ages can be attributed to the 'biological pump', where atmospheric carbon is absorbed by phytoplankton and sequestered to the seafloor as organisms die and sink.

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Dust in ice cores leads to new knowledge on the advancement of the ice before the ice age

Working with the ice core ReCap, drilled close to the coast in East Greenland, researchers wondered why the dust particles from the interglacial period — the warmer period of time between the ice ages — were several times bigger than the dust particles from the ice age. The research led to the invention of a method able to map the advancement of the glaciers in cold periods and the melting in warmer periods.

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New species of crocodile discovered in museum collections

By looking at 90-year-old crocodile skulls in museum collections and double-checking with live specimens at a zoological park in Florida, researchers have just discovered a new species of ten-foot-long croc. The new species, Crocodylus halli, is from the southern part of New Guinea, and until now, scientists had thought it was the same species that lived on the northern part of the island.

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