Remember the Concorde? The supersonic passenger jet that flew from 1969 to almost 2000. It was not cost effective for the airlines, and extravagantly expensive for passengers. It was also cramped. The luxury was being able to fly from New York to London in about 3 hours!
The Concorde had a big problem, the sonic boom it created when flying at supersonic speed. This led to governments restricting where it could fly supersonically and was a major factor in it not being economical to continue flying. That and a very advanced airframe that was getting old.
The return of supersonic passenger travel may be coming closer to reality thanks to NASA’s efforts to define a new standard for low sonic booms.
Several NASA aeronautics researchers will present their work in Atlanta this week at Aviation 2014, an annual event of the American Institute of Aeronautics and Astronautics. They will share with the global aviation community the progress they are making in overcoming some of the biggest hurdles to supersonic passenger travel.
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A team of seven UCLA environmental science students has created a website that shows how emissions from local factories are impacting air quality in Los Angeles County.
Cal EcoMaps, launched this month, features an interactive map with detailed information about 172 facilities representing the top four emitting industries — petroleum, primary metals, fabricated metals and chemical production.
The website, created as part of the Environmental Protection Agency's Toxics Release Inventory University Challenge, will help residents of the Los Angeles Basin access information related to factory-produced toxic emissions. It will also benefit industrial facility operators, giving them a better sense of their environmental impact, how their sites compare to others and how they might improve their records.
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The Antarctic shore is a place of huge contrasts, as quiet, dark, and frozen winters give way to bright, clear waters, thick with algae and peppered with drifting icebergs in summer. But as the planet has warmed in the last two decades, massive losses of sea ice in winter have left icebergs free to roam for most of the year. As a result, say researchers reporting in the Cell Press journal Current Biology on June 16, boulders on the shallow seabed -- once encrusted with a rich assemblage of species in intense competition for limited space -- now mostly support a single species. The climate-linked increase in iceberg activity has left all other species so rare as to be almost irrelevant.
"The Antarctic Peninsula can be considered an early warning system -- like a canary in a coal mine," says David Barnes of the British Antarctic Survey. "Physical changes there are amongst the most extreme and the biology considered quite sensitive, so it was always likely to be a good place to observe impacts of climate change -- but impacts elsewhere are likely to be not too far behind. A lot of the planet depends on the near-shore environment, not least for food; what happens there to make it less stable is important."
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A clinical trial involving nearly 300 men and women residing in one of China's most polluted regions found that daily consumption of a half cup of broccoli sprout beverage produced rapid, significant and sustained higher levels of excretion of benzene, a known human carcinogen, and acrolein, a lung irritant.
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You could say that, at least until now, cars and tomatoes have basically nothing in common. Tomatoes go from green to red as they ripen, and cars, well, they seem to be getting greener. As part of this trend, Ford is one of several companies that have been pursuing a viable bio-based plastic that could substitute for the petroleum-based plastics that dominate the industry today. Indeed, as cars continue to reduce vehicle weight in order to improve fuel economy, the use of plastics is becoming ever more common.
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A new study by researchers at the University of Bristol and Plymouth Marine Laboratory has shed light on how different species of marine organisms are reacting to ocean acidification.
Since the Industrial Revolution, nearly 30 per cent of all the carbon dioxide produced by manmade emissions has been absorbed by the ocean, causing a drop in pH of ocean surface waters: ocean acidification.
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Not all non-human animal dads are cut out for family life, but there are a number of species who have become known for their role as fathers who deserve a salute, from giant water bugs who carry dozens of eggs on their backs to males who actually get pregnant and dads who operate solo as single parents. This Father's Day, it's time to celebrate some of the amazing dads from the animal kingdom who go above and beyond when it comes raising and protecting their young.
Red Fox
Male red foxes aren't just loving mates, but excited and protective fathers. They take on the task of providing food for their mates every few hours for about a month after she gives birth. Then they take on the role of teacher – but teachers who like to take time out to play. Even when it’s time to get serious and teach their young how to start finding their own food, fox dads help them out and make sure they don't really go hungry by hiding it near their dens.
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Tomorrow is Father's day and animals are not normally thought of as being good fathers. For most species, the mothers do most of the work feeding and nurturing their young. Owl monkeys appear to be an exception!
If there were a competition for "best father" in the animal kingdom, owl monkeys might very well win.
Why? Because father owl monkeys provide most of the care needed by their young--carrying them almost all the time, even when chased by predators. By contrast, caregiving from owl monkey mothers to their young is limited almost exclusively to nursing.
Considering the high prevalence of "deadbeat dads" and even "cannibal dads" in the animal kingdom, why--of all creatures--are father owl monkeys so attentive and protective of their young? This question is answered by Patricia C. Wright of Stony Brook University in the accompanying video.
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