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Dinosaur DNA linked to chickens, ostriches | |
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Gizmorama - Dinosaur DNA linked to chickens, ostriches
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Good Morning,
I hope you had a great weekend. We have some interesting
articles to start the week off right. Enjoy!
Until Tomorrow,
Erin
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Study: Bio-plastic goods not eco-friendly
Bio-plastic goods can still damage the environment by emitting
gases that can impact climate change, a study by a British
newspaper found. The Guardian reported Saturday that its
study determined the plant-based goods being embraced by
supermarkets worldwide can cause environmental problems and
add to the world's food crisis. The replacements for oil-based
plastic goods have been found to increase greenhouse gas
emissions when placed in landfills, the British newspaper
said. The study found that some of the supposedly eco-friendly
goods only begin to decompose at high temperatures and others
cannot be used for recycling purposes in Britain. The increasing
amount of land needed to create the materials for bio-plastic
goods can impact the food crisis currently facing the
international community, the Guardian said. The newspaper said
its study found the growing amount of land used for these
purposes means less land is available for food-growing
purposes to fight the escalating crisis.
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Dinosaur DNA linked to chickens, ostriches
U.S. researchers said genetic sequencing of a Tyrannosaurus rex
protein shows a common ancestry with chickens, ostriches and
alligators. The matching of the protein -- taken from a T. rex
femur found in 2003 in an area between Wyoming and Montana --
represents the first use of molecular data to place a non-avian
dinosaur in a phylogenetic tree, the National Science Foundation
said Friday in a release. The findings are published in the
journal Science. "These results match predictions made from
skeletal anatomy, providing the first molecular evidence for
the evolutionary relationships of a non-avian dinosaur,"
co-author Chris Organ, a researcher at Harvard University, said
in a statement. "Even though we only had six peptides -- just
89 amino acids -- from T. rex, we were able to establish these
relationships." The current paper builds on work by a team
headed by John Asara and Lewis Cantley of Beth Israel Deaconess
Medical Center and Harvard Medical School. "We determined that
T. rex, in fact, grouped with birds -- ostrich and chicken --
better than any other organism that we studied," Asara said.
"We also showed that it groups better with birds than modern
reptiles, such as alligators and green anole lizards."
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Ice Age relic at risk from warmer temps
U.S. conservationists said they're studying musk ox to
determine how the relics of the Ice Age may be affected by
climate change. The Wildlife Conservation Society -- working
with the National Park Service, U. S. Geological Survey and
Alaska Fish and Game -- has equipped six musk ox with GPS
collars as part of a four-year study to determine the extent
to which weather, disease and predation may be driving
populations, the WCS said Friday in a release. "Musk ox are
a throwback to our Pleistocene heritage and once shared the
landscape with mammoths, wild horses and sabered cats," study
leader Joel Berger, a professor at the University of Montana,
said in a statement. "They may also help scientists understand
how arctic species can or cannot adapt to climate change."
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