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It is logically, theoretically and mathematically impossible to stop the aging process, scientists have said. In a blow to researchers currently working to slow or even stop the detrioration of cells in the human body, Joanna Masel and Paul Nelson, from the University of Arizona, have found a catch-22 when it comes to anti-aging science: it can cause cancer. In their research, published in the Proceedings of the National Academy of Sciences, Masel and Nelson looked at exactly what happens to cells in the body as they age to see if there is any way to halt the process in multicellular organisms like humans.
There is a "catastrophic" gap between national pledges to reduce greenhouse gas emissions and the actions needed to cap global warming below two degrees Celsius, the UN's environment chief warned Tuesday, days ahead of global climate talks in Bonn. Record-setting extreme weather in 2017 -- including monsoon flooding, raging fires, and a trio of deadly hurricanes -- likely bears the fingerprint of global warming, it noted. "One year after the Paris Agreement entered into force, we still find ourselves in a situation where we are not doing nearly enough to save hundreds of millions of people from a miserable future," said Eric Solheim, head of the UN agency.
Scientists have written another chapter in the curious case of the composer’s heart. But it is unlikely to be the end of the story.
Nature 551 5 doi: 10.1038/551005a
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The oceans of modern day Earth are scary enough already, with all kinds of creatures that could make your blood run cold if you accidentally happened upon one, but back in the Jurassic period things were no safer. If you were taking a dip in the Jurassic ocean, an ichthyosaur would have been one of the more intimidating animals you could bump into, and the fossilized remains of one was just discovered in India for the very first time.
The specimen measures some 18 feet long, though they could reach as large as 30 feet, and this particular example is remarkably well preserved. But the part of the these new fossils that is most exciting to the researchers is its jaw, and the lessons its teeth can teach us about what the massive beast ate on a daily basis.
The nearly 20-foot-long aquatic reptile was a big fan of eating crunchy ocean creatures, and its remains were discovered in proximity to what scientists believe were its typical daily fare. Mollusks and other shelled sea animals were all fair game for dinner, and the ichthyosaur's powerful jaws and robust teeth made short work of them.
"We could infer from wear patterns on its teeth that this ichthyosaur was a top-tier predator that fed on hard and abrasive food material, including marine molluscs (ammonoids and belemnites), fish and possibly other marine reptiles," lead researcher Guntupalli Prasad explains in an interview published in PLOS One.
The researchers are hopeful that continued exploration in the region will help them uncover even more fossils, and potentially spark further interest for paleontologists in India.
Around 130 dead seals have washed up on the shores of Russia's Lake Baikal, authorities said Tuesday, as they launched a probe into the latest problem to hit the world's deepest lake. The Baikal seal is the smallest in the world, and exactly how and when the species colonised the ancient Siberian lake is still a mystery. "There were about 130 animals found dead" over the past few days, said environmental ministry spokesman Nikolai Gudkov.
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