In the 1980s, I remember that many scientists feared that ozone depletion was irreversible and the headlines in many newspapers declared that nations were powerless to stem the growing loss of ozone - the great hole in the ozone that threatened us all. But the Montreal Protocol proved that the pessimists and the naysayers were wrong. Virtually all the parties have met their obligations under the accord. Nearly 100 of the most ozone-depleting substances have been phased out. And as a result, the hole in the ozone is shrinking and on its way to repair. It's why we're here today... Now, that's the good news. The bad news is that in too many cases, the substances banned by the Montreal Protocol have been replaced by hydrofluorocarbons - HFCs - which are safer for ozone, but are exceptionally potent drivers of climate change - thousands of times more potent, for example, than CO2.
The Montreal treaty allows nations to amend it to ban substitute chemicals that have negative environmental effects even if they do not harm the ozone. And American chemical companies such as Dow, DuPont and Honeywell have already begun to patent climate-friendly HFC substitutes.
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Thomas Tompion Scientist of the Day
Thomas Tompion, an English clock maker, was baptized July 25, 1639.
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Super-eruptions -- volcanic events large enough to devastate the entire planet -- give only about a year's warning before they blow. That is the conclusion of a new microscopic analysis of quartz crystals in pumice taken from the Bishop Tuff in eastern California, which is the site of the super-eruption that formed the Long Valley Caldera 760,000 years ago. Researchers analyzed dozens of small quartz crystals from the Bishop Tuff. Previous investigations of quartz crystals from several super-eruptions, including Long Valley, have noted that they have distinctive surface rims. These studies concluded that the rims formed in less than a century before eruption.
Image credit: NASA/JPL
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The trumpeter swan (Cygnus buccinator) is a species of swan found in Alaska, Canada and the northwestern US. The heaviest living bird native to North America, it is also the largest extant species of waterfowl with a wingspan that can exceed 10 ft. Pictured here, Trumpeter swans taking off from Yellowstone Lake.
Image credit: NPS/Jim Peaco
It's the first time for a solar-powered plane to circumnavigate the globe. Now it's en route to Abu Dhabi, United Arab Emirates — and you can watch the journey in a live video from the cockpit.
Climate change and mass extinctions suggest that we have been telling the wrong stories. Writers need to reconnect with the natural world
We had climbed, slowly, to a high mountain ridge. We were two young Englishmen who were not supposed to be here journalism was forbidden and four local guides, members of the Lani tribe. Our guides were moving us around the highlands of West Papua, taking us to meet people who could tell us about their suffering at the hands of the occupying Indonesian army.
The mountain ridge was covered in deep, old rainforest, as was the rest of the area we had walked through. This forest, to the Lani, was home. In the forest they hunted, gathered food, built their homes, lived. It was not a recreation or a resource: there was nothing romantic about it, nothing to debate. It was just life.
The forests fall, the ice melts and the extinctions roll on; but we keep writing love letters to ourselves, oblivious
Once a warning to man that he must keep in harmony with the family of living creatures among which he was born … it is now a reminder that he has disregarded the warning, turned the house upside down by capricious experiments in science, philosophy and industry, and brought ruin upon himself and his family.
We must uncentre our minds from ourselves;
We must unhumanise our views a little, and become confident
Maybe it is impossible for any of us to 'unhumanise our views'. Maybe we can only ever speak to, and of, ourselves.
Continue reading...WHO WE ARE
EDITORS: Nathan Gardels, Co-Founder and Executive Advisor to the Berggruen Institute, is the Editor-in-Chief of The WorldPost. Kathleen Miles is the Executive Editor of The WorldPost. Farah Mohamed is the Managing Editor of The WorldPost. Alex Gardels and Peter Mellgard are the Associate Editors of The WorldPost. Suzanne Gaber is the Editorial Assistant of The WorldPost. Katie Nelson is News Director at The Huffington Post, overseeing The WorldPost and HuffPost's news coverage. Charlotte Alfred and Nick Robins-Early are World Reporters. Rowaida Abdelaziz is World Social Media Editor.
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ADVISORY COUNCIL: Members of the Berggruen Institute's 21st Century Council and Council for the Future of Europe serve as the Advisory Council -- as well as regular contributors -- to the site. These include, Jacques Attali, Shaukat Aziz, Gordon Brown, Fernando Henrique Cardoso, Juan Luis Cebrian, Jack Dorsey, Mohamed El-Erian, Francis Fukuyama, Felipe Gonzalez, John Gray, Reid Hoffman, Fred Hu, Mo Ibrahim, Alexei Kudrin, Pascal Lamy, Kishore Mahbubani, Alain Minc, Dambisa Moyo, Laura Tyson, Elon Musk, Pierre Omidyar, Raghuram Rajan, Nouriel Roubini, Nicolas Sarkozy, Eric Schmidt, Gerhard Schroeder, Peter Schwartz, Amartya Sen, Jeff Skoll, Michael Spence, Joe Stiglitz, Larry Summers, Wu Jianmin, George Yeo, Fareed Zakaria, Ernesto Zedillo, Ahmed Zewail and Zheng Bijian.
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The paradoxical occurrence of heightened, lucid awareness and logical thought processes during a period of impaired cerebral perfusion raises particularly perplexing questions for our current understanding of consciousness and its relation to brain function. As prior researchers have concluded, a clear sensorium and complex perceptual processes during a period of apparent clinical death challenge the concept that consciousness is localized exclusively in the brain.
NDEs seem instead to provide direct evidence for a type of mental functioning that varies "inversely, rather than directly, with the observable activity of the nervous system." Such evidence, we believe, fundamentally conflicts with the conventional doctrine that brain processes produce consciousness, and supports the alternative view that brain activity normally serves as a kind of filter, which somehow constrains the material that emerges into waking consciousness.
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After years of lagging behind other ethnic groups when it comes to accessing the Internet, the "digital divide" between Latinos and whites is now at its narrowest point since 2009.
Emergency physicians learn to be prepared for anything thrown at us in the clinical arena. Personal life is a different story. Last year a drunk driver with multiple prior offenses and no valid driver's license smashed a truck through the wall of my son's daycare.
Fortunately, the children and staff were in undamaged areas. But just minutes before, my son and I had walked through the exact spot in the art room where the truck came to rest in a pile of debris.
Having worked in the ER for years, I've seen the aftermath of drunk driving often enough before, but that was the first time I had seen an accident caused by a drunk driver up close.
Drunk driving is a major public health problem in the U.S. In 2014 nearly one-third of the nation's 32,675 traffic fatalities were alcohol-related. This means a completely preventable death happened every 53 minutes in this country.
My brush with a drunk driver made me wonder about what practices and policies can help prevent accidents and fatalities. Research suggests lower blood alcohol concentration limits and interventions like ignition interlocks can make a big difference.
When drunk drivers come to the ER they often express surprise, disbelief or denial about their blood alcohol concentration (BAC) or their level of impairment. They often are drunker than they think they are.
Higher blood alcohol levels, no matter how "sober" you feel, can have a real impact on your ability to perform tasks that require concentration, such as driving. While people who drink more often may feel the effects of alcohol less acutely than someone who does not, their reflexes and judgment can still be impaired. And the more you drink, the harder it is to judge how intoxicated you are.
At least one study involving college students has shown that higher BACs are associated with an underestimation of an individual's level of intoxication.
Studies have also shown that increasing BAC is also associated with a decreased reaction time.
For instance, one study pointed to an average decreased reaction time of 120 milliseconds, just over a tenth of a second, associated with a blood alcohol content (BAC) level of 0.08, the legal limit. Traveling at 70 miles per hour, a drunk driver would travel for an additional 12 feet before reacting to a roadway hazard.
In 2000 Congress passed legislation making 0.08 the national standard for impaired driving in the United States. Under the law, states that did not adopt 0.08 as the standard by 2004 faced cuts in federal highway funding. By the time the law was passed many states had already adopted the 0.08 standards, but some states used 0.10 as the standard.
The lowering of the limit was in response to a 1992 National Highway Traffic Safety Administration report to Congress recommending this action as a way to reduce highway deaths. Implementation of these lower BAC laws has been associated with a decrease in alcohol-related highway fatalities. But 0.08 is still a fairly high BAC level compared to other developed countries.
Among the largest industrialized countries, only the U.S., United Kingdom and Canada permit BACs as high as 0.08. France, Germany, Italy and Australia currently set their BAC limit at 0.05. Japan has the lowest requirement of this group at 0.03. European countries in particular have sought lower BAC requirements in the past decades as part of an effort to decrease traffic deaths
When the European Commission, the executive body of the European Union, made its recommendations to change EU laws to recommend a BAC of 0.05 as the per se limit for impaired driving, they included supporting data, including fatality reductions, from countries with existing 0.05 BAC laws.
It might not take as many drinks as you think to slow your reaction time and make safe driving harder.
For the purposes of standardization, a drink is defined as 12 ounces of 5 percent alcohol beer, five ounces of 12 percent alcohol wine or one and a half ounces of 80 proof (40 percent alcohol) liquor. To account for an individual drinking over a longer period of time, subtract about 0.01 percent for each 40 minutes of drinking time.
According to the Centers for Disease Control and Prevention, in a 160-pound man, two alcoholic beverages can bring about some loss of judgment, decreased ability to rapidly track a moving target and result in decreased ability to multitask. Women generally weighing less than men, would see a higher BAC per drink.
Three alcoholic drinks will bring a person's blood alcohol level to a level of approximately 0.05 percent, which can impair the ability to rapidly focus vision, lower alertness, and decrease coordination to the point that steering becomes difficult and response to driving emergencies becomes blunted.
After approximately four alcoholic drinks, balance, vision and reaction time are often affected. It becomes harder to detect roadway dangers. Reasoning and information processing are often measurably impaired. This corresponds most closely to a BAC of 0.08 percent, the limit set by most states for legal operation of a vehicle.
A blood alcohol of 0.10 percent is generally associated with a clear loss of reaction time and control. There will be reduced ability to maintain proper lane position or brake appropriately.
Not surprisingly, as the BAC level climbs higher than 0.10 percent, it is associated with the progressively deteriorating ability to drive a vehicle safely.
Studies going back to the 1960s have demonstrated the correlation between BAC and accident risk. The relative risk of being in a crash is 1.38 times higher at a BAC of 0.05 than 0.00. At 0.08, the risk is 2.69 times higher. At 0.10, the crash risk climbs to five times higher.
When you consider the medical evidence, including the physiological effects, and the relative risk of crash, you can understand why some countries set the legal limit at 0.05 and why in 2013 the NTSB recommended that 0.05 become the new limit in the U.S.
Drunk driving is a tough problem to solve. One solution is to focus interventions on those who have a prior alcohol impaired driving arrest because they are at higher risk of doing it again. The reasons for this are not clear, but many drunk driving episodes are linked to binge drinking and not simply social drinking.
Ignition interlocks, which are essentially breathalyzers connected to the vehicle's ignition system, could also make a difference. These devices ensure that the vehicle can only be started by a sober driver. They've have been around for many years and modern versions have features to resist tampering, and require intermittent rechecks to ensure the driver doesn't drink after starting the vehicle.
All states use ignition interlocks to some degree, but as of January 2016, only 23 states require interlocks for all DUI offenders, which are sometimes called universal ignition interlock laws. The NTSB recommended the use of ignition interlocks for all first time offenders in 2012.
A 2015 study in the American Journal of Public Health, found that states with these laws have fewer alcohol involved crash deaths. Researchers compared data for 18 states which implemented universal ignition interlock laws to 32 states that had not. In those 18 states, universal interlock laws saved 918 lives, a 15 percent reduction in deaths related to drunk driving.
It is every driver's responsibility to understand that there is no "safe" BAC level. It's simple: The more you drink, the less you are able to drive safely, and the higher the likelihood of an accident. For those who ignore the evidence and the law, at least there is a technical solution that could help stop further loss of life to this preventable problem.
Brad J. Uren, Assistant Professor of Emergency Medicine, University of Michigan
This article was originally published on The Conversation. Read the original article.
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Pierre Lyonet Scientist of the Day
Pierre Lyonet, a French illustrator and microscopist, was born July 22, 1708.
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The Lagoon Nebula is a popular stop in the constellation Sagittarius. It is estimated to be between 4,000-6,000 light-years from the Earth, in the direction of the center of the Milky Way.
Image credit: Kitt Peak Observatory
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A team of researchers and students at the University of California, Riverside has created a Lego-like system of blocks that enables users to custom make chemical and biological research instruments quickly, easily and affordably. The system of 3D-printed blocks can be used in university labs, schools, hospitals and anywhere there is a need to create scientific tools. The blocks are called Multifluidic Evolutionary Components (MECs) because of their flexibility and adaptability. Each block in the system performs a basic task found in a lab instrument, like pumping fluids, making measurements or interfacing with a user. Since the blocks are designed to work together, users can build apparatus -- like bioreactors for making alternative fuels or acid-base titration tools for high school chemistry classes -- rapidly and efficiently. The blocks are especially well suited for resource-limited settings, where a library of blocks could be used to create a variety of different research and diagnostic tools.
Image credit: UC Riverside
If only the world had listened to Ignaz Semmelweis. In the late 1840s, he helped run a large hospital in Vienna with two maternity wards. In one, the rate of deadly infection after childbirth was around 10%. In the other, it was more than double that. After puzzling over the discrepancy, he remembered that the second clinic was staffed by medical students who often arrived fresh from anatomy class to deliver children their hands clammy from human dissection. Semmelweis realised “cadaverous particles” could be responsible for the fate of the women and instituted a rigorous new hand-washing regime. Mortality in the ward dropped by 90%.
This was years before Louis Pasteur developed a scientific theory that microscopic germs were the cause of infections that would have explained Semmelweis's success. But being unable to account for why better hygiene worked made his protocol a hard sell. It was rejected by medical authorities and more than two decades passed before germs were identified and antisepsis practised. In the meantime, millions of women died avoidable deaths.
Leeches were dismissed as tokens of medieval quackery. But then it was discovered that they actually worked
Continue reading...It sounds like a fairy tale but it's real. A study shows how wild birds and people communicate to find bees' nests and share the sweet honeycomb. The teamwork may date back thousands of years or more.
Solar-panel roofs on cars, compact SUVs, and high-passenger-density urban transport are all part of Elon Musk's self-titled "master plan, part deux" for the world.…
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