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Holotype of Rhyniognatha hirsti, preserved in Early Devonian (Pragian) chert of Rhynie, Scotland.
Athletes named in a doping report fight to keep their reputations clean, but is there more to the story? Jackie Robinson's legacy goes well beyond his career in baseball, the iconic player stood up for equal rights even before he integrated the sport.
Ken Burns' new two-part PBS documentary looks at the life of Jackie Robinson, the first African American to play in the MLB. NFL Commissioner Roger Goodell announced Tuesday that Twitter has secured the rights to stream Thursday Night NFL games in the fall. MSNBC’s Andrea Mitchell reports on the Villanova University Wildcat’s “buzzer beater” win over the University of North Carolina Tar Heels for the NCAA Championship basketball game. After almost 70 years, the city of Philadelphia is officially apologizing to Jackie Robinson over the racism he faced when he played the Phillies in 1947.
A group of amateur and professional runners competed in the second annual ‘La Verticale de la Tour Eiffel,’ a foot race up the stairs of the Eiffel Tower.
Trainer Massy Arias speaks about her experience moving from the Dominican Republic to America and starting her own exercise business.
Watch the highlights from the Obama administration's final Easter Egg Roll at the White House, including a “Where the Wild Things Are” book reading and a special appearance by Shaquille O’Neal. The New York Times identifies new flaws, including the use of incomplete data, in the NFL’s research on concussions.
NBA Hall of Famer Dikembe Mutombo describes what he witnessed at the Brussels airport during Tuesday's attack. After over two decades of climate negotiation meetings, it is clear that agreeing on reduction of emissions poses a great challenge. When negotiators gather in Paris at the end of November this year, they will do so with the aim of agreeing on how the world's greenhouse gas emissions are to be reduced. Researchers at the division have for a long time focused on cooperation based on models and simulations as well as on the challenge of climate change and possible solutions, but have not previously integrated the two fields of research.
Research in previous studies and experiments has shown that it is easier to reach an agreement if there is a well-known threshold that cannot be passed without resulting in an environmental disaster. In his research, Vilhelm investigated the possibility of making it easier to reach agreement if certain basic conditions are met before negotiations begin. For more than two decades, members of the United Nations have sought to forge an agreement to reduce global greenhouse gas emissions. Last week, China and the United States announced an ambitious climate agreement aimed at reducing carbon emissions in both countries, a pledge that marks the first time that China has agreed to stop its growing emissions. UN Secretary General Ban Ki-moon said Wednesday that countries must "accelerate the rhythm of negotiations" on capping global warming ahead of an international climate conference in Paris in December. International climate agreements like the Kyoto Protocol may discourage much-needed investment in renewable energy sources, and hence be counterprodutive, according to new research. The soaring canopy and dense understory of an old-growth forest could provide a buffer for plants and animals in a warming world, according to a study from Oregon State University published today in Science Advances. A new study has found that the very corals responsible for establishing today's reefs are now some of the most threatened coral species due to climate change and other man-made stressors. Many large glaciers in Greenland are at greater risk of melting from below than previously thought, according to new maps of the seafloor around Greenland created by an international research team.

The vast majority of Americans have experienced more favorable weather conditions over the past 40 years, researchers from New York University and Duke University have found. Many scientists fear that global warming will hit staple food crops hard, with heat stress, extreme weather events and water shortages.
The Conversation is funded by CSIRO, Melbourne, Monash, RMIT, UTS, UWA, ACU, ANSTO, ANU, Canberra, CDU, CQU, Curtin, Deakin, ECU, Flinders, Griffith, the Harry Perkins Institute, JCU, La Trobe, Murdoch, Newcastle, UQ, QUT, Swinburne, Sydney, UNDA, UNE, UniSA, UNSW, USC, USQ, UTAS, UWS, VU and Wollongong.
Going under a general anaesthetic usually involves sensory checks such as getting you to count down as you lose consciousness. But by studying electrical activity in the brain during anaesthesia, researchers at Oxford University suggest there is another point where lack of consciousness can be measured - where the number of slow brain waves produced in our brains reaches a plateau. Using propofol, the anaesthetic most commonly used in operations, the team measured the increase in slow brain wave activity using EEG scans. The researchers, who published their findings in Science Translational Medicine, also used fMRI scans to take pictures of the brain and found that the volume of grey matter - areas with lots of neurons that help process sensory information - correlated with when someone reached slow wave saturation. She added: “Anaesthesiologists can eliminate the risk of awareness by giving a larger dose.
The team slowed down the rate at which they gave propofol to test subjects - instead of one large dose, the anaesthetic was administered over 45 minutes. Despite being given to millions of people each year, there is much we still don’t know about the exact mechanisms behind how anaesthetics work in the brain - and how unconsciousness happens. Activity in the thalamus region of the brain has been shown to reduce as we lose consciousness, which has led some to believe that this region of the brain is the “switch” behind the breakdown of communication. In their study, the Oxford researchers showed that as slow brain waves began to plateau, this thalamocortical system stopped responding to sensory stimuli but continued to process internal information, at which point another cortical network in the brain did respond.
Anaesthetic awareness, where patients have some level of feeling or memory of an operation while under was recently described by one consultant as “third state of consciousness” which may happen more often than we think - though it is still generally considered rare. Doctors currently have no perfectly reliable way of ensuring patients are adequately unconscious before an operation begins.
Sydney Ideas - What is a Teacher in the 21st Century and What does a 21st Century Teacher Need to Know? The world's oldest tropical lizard, perfectly preserved in amber, was recently found among collections at the American Museum of Natural History.
The world's oldest tropical lizard, perfectly preserved in amber, was recently found among collections at the American Museum of Natural History.
The world's oldest known tropical chameleon has been discovered in a piece of amber from Myanmar in Southeast Asia. This dime-sized chameleon was found among 11 other ancient fossil lizards from collections at the American Museum of Natural History.
Previously, not much was known about small tropical lizards, as they have fragile bones that do not preserve well when buried in sediment like the bones of dinosaurs. Discovering the 100 million-year-old chameleon challenges the view that these animals first evolved in Africa. Lukas Nelson, the son of Willie Nelson, has released a new album, "Something Real," with his roots rock band Lukas Nelson & Promise of The Real. Petsmile toothpaste claims to be a a€?no brusha€? easy way to get your dog, cat or ferreta€™s teeth clean and breath smellinga€¦ um, less doggy, catty or ferrety. Louise Harrison, the elder sister of George Harrison, had a front-row seat to musical history.

We Millennials are killing the art of conversation and the desire to make our voices heard a€“ really heard a€“ one text message at a time. Chuck Todd talks to Michael Powell of The New York Times, who has uncovered new information. Burns joins Morning Joe to discuss the documentary and why Robinson's life was devoted to equality. The Tampa Bay Rays baseball team also arrived in the country, where the sport is integral to Cuban culture.
Researchers are attempting to gain better theoretical understanding of the mechanisms that can impact the results of the negotiations. However, new findings in social science show that negotiators often come to the negotiating table with a high degree of strategic thinking. However, they will also have their own agendas in terms of returning home with as good a solution as possible for their own country. The step towards integration has now been taken and climate negotiations have been modelled. Strategic reasoning and bargaining in catastrophic climate change games, Nature Climate Change (2015). We use a Creative Commons Attribution NoDerivatives licence, so you can republish our articles for free, online or in print. It was found that this activity, which also increases in our brains at particular times during normal sleep, reached a saturation point where it remained constant even when the dose of propofol was increased. This suggests that grey matter could be used to work out when someone will reach a plateau in their brain’s electrical activity before undergoing an operation.
This allowed them to test different levels of consciousness using EEG and also sensory tasks including a word association test and a pain threshold test using a laser pin-prick.
The “information integration” theory of consciousness, which is widely held, holds that different parts of the brain simultaneously communicate and process individual bits of information, and breaking down this communication system leads to a loss of consciousness - or response to sensory stimuli. It also helps researchers pinpoint the evolutionary order of some of the lizard's most distinctive features.
New research from Chalmers indicates that it might be more difficult to reach agreement than previous theoretical models have shown, but it also shows that there are ways to move forward.
This can impact how negotiators behave in terms of reaching both their objectives a€“ first, trying to find a solution to a problem, and second, without overly negatively affecting the results for the negotiator's own country.
New social science theories have shown that experienced negotiators utilise a higher degree of strategic reasoning than people on average do, which means they are better at predicting other people's actions. But cases of “anaesthetic awareness” suggest this point of sensory switch off may not be the full picture.
Some studies have sought to test awareness, whereas others have used information gathered from patients retrospectively. Because of this, negotiations to reach an agreement become more complicated," says Vilhelm Verendel, who works as a doctoral student at the Division of Physical Resource Theory at Chalmers.
Vilhelm and his colleagues have combined these results with previous research on how climate negotiations can be modelled.

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