Enn Original News
Namibia Wildlife Conservation
May 23, 2011 09:10 AM - David A Gabel, ENN
Namibia is a country in southern Africa which borders the Atlantic Ocean, just north of the nation of South Africa. The nation was a German Imperial protectorate from 1884 to the end of World War I, when the League of Nations gave South Africa the ruling authority. After a long struggle, Namibia achieved independence in 1990. This is a typical story for many south African nations, but what sets Namibia apart is its outstanding wildlife conservation programs. Using a community-based system, it has maintained a healthy native ecosystem which has seen sharp increases in its key wildlife populations.
Japanese Quake News
May 23, 2011 08:10 AM - Andy Soos, ENN
A new NASA and university study of the March 11, 2011, Japan earthquake that included researchers from NASA’s Jet Propulsion Laboratory, Pasadena, Calif., provides the most comprehensive look to date at how Earth moved that day, unleashing widespread destruction and a devastating tsunami. The study of the magnitude 9.0 Tohoku-Oki quake, led by researchers at the California Institute of Technology in Pasadena, and published online in the May 19 issue of Science Express, details the first large set of observational data from this rare megathrust earthquake event.
The best Job in the World? Filming in the Jungle, new from BBC Earth
May 20, 2011 04:33 PM - Adelle Havard, BBC Earth
Often the attraction of working in natural history is the thrill of the wild. The untamed, the undomesticated, the possibility of discovering the unknown! However even as a dedicated natural history program maker, there are certain hostile and remote locations where it is essential to have your super-human senses switched on. As a cameraman, crouching down to get that perfect shot on the dark and damp forest floor. It is your ears you need to rely on above all else, as often the only proof of the vast amounts of animal life around you”¦is what you hear! The high humidity of this environment creates ideal conditions for the strangest animals to live, breed and sing! Through the cacophony of rival mating calls, warning cries, sharing the location of a known food source and social interaction; the sounds of the wilderness could leave you overwhelmed. But it is a specific sound you are listening out for”¦ As an enthusiastic drummer of the jungle, the chimpanzee has worked out a less stressful way of communicating with each other than exhaustive calls...which transpires is also a highly enjoyable one! While scouring the forest in search of their next meal, the troops will use buttress roots and hollow trunks to sound out! Drumming as they pass, the chimpanzee’s will make distinctive bass sounds (some even repeatedly on their favorite trees!) using their hands and feet to make clear - who is where, and how successful each party has been with their search.
Worlds Between Stars
May 20, 2011 03:59 PM - Andy Soos, ENN
A planet, historically, is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighboring region of planetesimals. Astronomers, including a NASA-funded team member, have discovered a new class of Jupiter-sized planets floating alone in the dark of space, away from the light of a star. The team believes these lone worlds were probably ejected from developing planetary systems. The discovery is based on a joint Japan-New Zealand survey that scanned the center of the Milky Way galaxy during 2006 and 2007, revealing evidence for up to 10 free-floating planets roughly the mass of Jupiter. The isolated orbs, also known as orphan planets, are difficult to spot, and had gone undetected until now. The new found planets are located at an average approximate distance of 10,000 to 20,000 light-years from Earth.
High Atmospheric CO2 Levels May Cause Mass Extinctions in the Oceans
May 19, 2011 09:20 AM - David A Gabel, ENN
One of the greatest causes of global climate change is the human emissions of greenhouse gases, specifically carbon dioxide (CO2). These emissions are released into the atmosphere, but much of it gets absorbed into the world's oceans. A new study, published in the Proceedings of the National Academy of Sciences, looked at prehistoric ocean sediment and found a disturbing trend. Periods of high CO2 concentrations have historically coincided with mass extinctions of marine organisms.
The Salty Seas of Earth
May 19, 2011 08:16 AM - Andy Soos, ENN
Final preparations are under way for the June 9 launch of the international Aquarius/SAC-D observatory. The mission's primary instrument, Aquarius, will study interactions between ocean circulation, the water cycle and climate by measuring ocean surface salinity. On average, seawater in the world's oceans has a salinity of about 3.5% (35 g/L). In addition to Aquarius, the observatory carries seven other instruments that will collect environmental data for a wide range of applications, including studies of natural hazards, air quality, land processes and epidemiology. Although the vast majority of seawater has a salinity of between 3.1% and 3.8%, seawater is not uniformly saline throughout the world. Where mixing occurs with fresh water runoff from river mouths or near melting glaciers, seawater can be substantially less saline. The most saline open sea is the Red Sea, where high rates of evaporation, low precipitation and river inflow, and confined circulation result in unusually salty water. The salinity in isolated bodies of water (for example, the Dead Sea) can be considerably greater still.
Heart Risk and Injury
May 18, 2011 07:54 AM - Andy Soos, ENN
Nitric Oxide, a gas that occurs naturally in the body, may do more than any prescription drug to prevent heart attack and stroke. Nitric Oxide is essential for healthy circulation. It helps dilate blood vessels, prevent blood clots and regulate blood pressure. It also helps inhibit the accumulation of dangerous arterial plaque. Nitric Oxide helps prevent heart disease and stroke in the following ways: blood vessels expansion and protecting the blood vessels smooth muscle tissue from harmful constriction. This allows the flexibility necessary for blood to circulate with less pressure. Exercise reduces the risk of a heart attack and protects the heart from injury if a heart attack does occur. For years, doctors have been trying to dissect how this second benefit of exercise works, with the aim of finding ways to protect the heart after a heart attack.
Ancient Hawaiian Farms
May 17, 2011 02:36 PM - Andy Soos, ENN
The original settlers of Polynesia migrated through South-East Asia and Indonesia across Melanesia, before settling the Polynesian islands beginning in 1000 BC. Hawaii was one of the last island groups to be settled. Archaeological evidence indicates the first Polynesians arrived in Hawaii from the Marquesas between 500 and 700 AD. Hawaii has often been thought of as an earthly paradise. Still people must live and eat. A pattern of earthen berms, spread across a northern peninsula of the big island of Hawaii, is providing archeologists with clues to exactly how residents farmed in paradise long before Europeans arrived at the islands.
The Great Lousiana Flood
May 16, 2011 01:34 PM - Andy Soos, ENN
The Mississippi River floods in April and May 2011 are among the largest and most damaging along the U.S. waterway in the past century, rivaling major floods in 1927 and 1993. In April 2011, two major storm systems dumped record rainfall on the Mississippi River watershed. Rising from springtime snowmelt, the river and many of its tributaries began to swell to record levels by the beginning of May. Following the Great Mississippi Flood of 1927, much effort has been invested in building defenses to withstand a flood of three million cubic feet per second just upstream from the Old River Control Structure. The US Army Corps of Engineers refers to this design goal as the "project flood". As of 11 May 2011 the expected flow will be on the high side, but still within that maximum capacity, assuming everything works as expected. The U.S. Army Corps of Engineers on Saturday opened two of the 125 floodgates at the Morganza Spillway 45 miles northwest of Baton Rouge, and opened two more on Sunday. Opening the floodgates - a move last taken in 1973 - will channel water away from the Mississippi River and into the Atchafalaya River basin. That will take the floodwaters toward homes, farms, a wildlife refuge and a small oil refinery but avoid inundating New Orleans and Louisiana's capital, Baton Rouge.
The Parakeet Invasion of England
May 16, 2011 09:45 AM - David A Gabel, ENN
This green and pleasant land is quickly becoming home to a green and not so pleasant bird. The Rose-Ringed Parakeet (Psittacula krameri), an exotic bird from India and sub-Saharan Africa is spreading like wildfire in London and its surrounding suburbs. Their population was estimated at 1,500 in 1995. Only a few years ago, their numbers have jumped to an estimated 30,000! At first they seemed like a new attractive bird in people's backyards. Now they are a pest, hogging bird feeders and causing a nuisance. However, the greatest fear is that they will spread to agricultural areas and threaten crops.