The Promise of Fusion Power - update
August 26, 2013 02:43 PM - Roger Greenway, ENN
Wouldn't it be great to have abundant, clean power that doesn't contribute to climate change? That is the promise of fusion power. Practical fusion power remains elusive, but advances in creating self-sustaining fusion reactions and harnessing its power continue to occur. In the early morning hours of Aug.13, Lawrence Livermore's National Ignition Facility (NIF) focused all 192 of its ultra-powerful laser beams on a tiny deuterium-tritium filled capsule. In the nanoseconds that followed, the capsule imploded and released a neutron yield of nearly 3x1015, or approximately 8,000 joules of neutron energy -- approximately three times NIF's previous neutron yield record for cryogenic implosions. The primary mission of NIF is to provide experimental insight and data for the National Nuclear Security Administration's science-based stockpile stewardship program. The experiment attained conditions not observed since the days of underground nuclear weapons testing and represents an important milestone in the continuing demonstration that the stockpile can be kept safe, secure and reliable without a return to testing.
Trinidad and Tobago: A Biodiversity Hotspot Overlooked
August 26, 2013 02:02 PM - Jeremy Hance, MONGABAY.COM
The two-island nation of Trinidad and Tobago in the Caribbean (just off the coast of Venezuela) may be smaller than Delaware, but it has had an outsized role in the history of rainforest conservation as well as our understanding of tropical ecology. Home to an astounding number of tropical ecosystems and over 3,000 species and counting (including 470 bird species in just 2,000 square miles), Trinidad and Tobago is an often overlooked gem in the world's biodiversity. "In the last 100 years, work in these forests was instrumental in deciphering principles we now take for granted. For example: echolocation in bats, animal chemical defenses and mimicry," Nigel Noriega, the director of Sustainable Innovation Initiatives (SSI) told mongabay.com adding that the "Tobago Main Ridge Forest Reserve is under consideration as a UNESCO World Heritage Site because it is on record as the world's oldest legally protected forest reserve geared specifically towards a conservation purpose.
Planting trees in deserts to fight climate change
August 26, 2013 06:16 AM - Earth System Dynamics, SciDevNet
Planting trees in coastal deserts could capture carbon dioxide, reduce harsh desert temperatures, boost rainfall, revitalise soils and produce cheap biofuels, say scientists. Large-scale plantations of the hardy jatropha tree, Jatropha curcas, could help sequester carbon dioxide through a process known as 'carbon farming', according to a study based on data gathered in Mexico and Oman that was published in Earth System Dynamics. Each hectare of the tree could soak up 17-25 tonnes of carbon dioxide a year, they say, at a cost of 42-63 euros (about US$56-84) per tonne of gas, the paper says. This makes the technique competitive with high-tech carbon capture and storage.
Which came first, the chicken or the egg?
August 25, 2013 08:56 AM - Roger Greenway, ENN, Electric Forum
Electric vehicles will catch on when there are enough charging stations to make their widespread use really practical, and manufacturers will offer more EV's for sale when there is a market for them! I love driving my Tesla Model S, but have to admit that for some overnight trips I take an older internal combustion engine powered car since it is still hard to find a hotel with a charging station that I can plug in to for a battery top-off. So which comes first, more electric cars, or more charging stations? There has been a massive increase in the number of electric vehicles and complimentary products released into the marketplace over the last few weeks. There is now growing suspicion that a number of EV manufacturers, and electric car charging companies, have been holding back products and services until they deemed the market was open to new ideas and new products. This may seem a little bizarre when you consider that the EV businesses will want to see as quick a return as possible or on their investments but every day now we see new products and new services being released. While the Tesla Model S certainly caught the headlines when released earlier this year we have also seen BMW introduce its first mainstream electric vehicle, Chevrolet look to reduce the headline cost of its vehicles and earlier this week we saw the introduction of a foldaway electric car. At this moment in time there is a constant flurry of new innovations and new products to the marketplace and while they are catching the headlines today we can only hope the industry does not run out of steam.
Sea Levels dropped in 2010 -2011, why?
August 22, 2013 06:21 AM - ScienceDaily
In 2011, scientists at NASA's Jet Propulsion Laboratory in Pasadena, Calif., and the University of Colorado at Boulder reported that between early 2010 and summer 2011, global sea level fell sharply, by about a quarter of an inch, or half a centimeter. Using data from the NASA/German Aerospace Center's Gravity Recovery and Climate Experiment (GRACE) spacecraft, they showed that the drop was caused by the very strong La Nina that began in late 2010. That La Nina changed rainfall patterns all over our planet, moving huge amounts of Earth's water from the ocean to the continents. The phenomenon was short-lived, however. A unique and complex set of circumstances came together over Australia from 2010 to 2011 to cause Earth's smallest continent to be the biggest contributor to the observed drop in global sea level rise during that time, finds a new study co-authored and co-funded by NASA.
Plans to Remap Coastal Areas after Hurricane Sandy Announced this week
August 21, 2013 08:57 AM - Editor, ENN
Preliminary U.S. damage from Hurricane Sandy that hit the East Coast in October of last year is estimated to be near $50 billion, making Sandy the second-costliest cyclone to hit the United States since 1900. Full recovery from Sandy will take years, but plans for remapping altered seafloors and shorelines were announced yesterday by a joint collaboration between the USGS, NOAA, and the US Army Corps of Engineers. The project includes acquiring data to update East Coast land maps and nautical charts by conducting a new survey of coastal waters and shorelines.
Warning Labels for Gasoline Pumps?
August 20, 2013 01:28 PM - Allison Winter, ENN
Tobacco packaging warning messages have recently been required on cigarettes and other tobacco products in many countries worldwide in an effort to enhance the public's awareness of the harmful effects of smoking. In a similar fashion, a Canadian campaign is calling for all gasoline pumps to have warming labels on nozzles to inform consumers on the effects fuels have on climate change. Michelle Reeves at Our Horizon, the non-profit executing the campaign, states, "It's a cheap, simple idea that has the potential to change the way we think about, and address, climate change. They are modeled after cigarette package warning labels, which have been proven to work. Some people's behavior might change, but our ultimate goal is to create a shift in the political will to demand for alternatives, and create a space in the market for affordable alternative mobility solutions."
Light Ordinance in France has Benefits for Wildlife
August 19, 2013 11:56 AM - Editor, ENN
Last month, France implemented one of the world's most comprehensive "lights out" ordinances. Conditions include turning off shop lights between 1 a.m. to 7 a.m., shutting off lights inside office buildings within an hour of workers leaving the premises, and waiting only until sunset before turning lights on, on building facades. Over the next two years, regulations restricting lighting on billboards will also go into effect. These rules are designed to eventually cut carbon dioxide emissions by 250,000 tons per year, conserve energy consumption, and cut the country's overall energy bill by 200 million Euros ($266 million).
Living with Urban Wildlife: Non-lethal Control
August 19, 2013 08:49 AM - Toni V. Shephard, The Ecologist
The human population has surpassed seven billion and continues to increase by a quarter of a million people every day. That's 150 additional people every minute, all needing energy, water, food and space to inhabit. The inevitable and unrelenting urban expansion which results leaves precious few natural refuges for other species. No surprise then that habitat loss and degradation is the number one cause of global biodiversity loss. Yet, some versatile species - such as foxes, rats, pigeons and gulls - manage to not only survive but thrive in our artificial landscapes. Sadly, few people see these animals as triumphant vestiges of the natural world but rather unwelcome scroungers who dare to live in our midst. Toni V. Shephard notes that less and less of us are prepared to deal with 'pests' using the traditional method i.e. killing them, and offers her perspectives and solutions on human/wildlife conflict...
How much will climate change cost coastal cities?
August 19, 2013 06:06 AM - Jörg Dietze/Sustainable sanitation, SciDevNet
Global damage from flooding could cost coastal cities as much as US$1 trillion per year — and developing countries will be hardest hit, a study warns. According to the paper published today in Nature Climate Change, a "risk sensitive planning" strategy is needed to protect coastal cities, which are increasingly at risk because of climate change, subsidence and a growing population.