New study finds that the nutritional value of prey within a single species can widely vary, offering key insights for food web dynamics and ecosystem change The hunt is on and a predator finally zeroes in on its prey. The animal consumes the nutritious meal and moves on to forage for its next target. But how much prey does a predator need to consume? Following a period of massive starvation among animals living along the California coast, University of California…
Threatened by habitat loss, poaching, pollution and other factors, wildlife species across the globe are declining in number at an alarming rate. Scientists from the Bronx Zoo-based Wildlife Conservation Society (WCS) in New York City have been monitoring endangered wildlife populations for more than 100 years. For decades, traditional capture and tag methods have been a primary tool, but they are not the most efficient when dealing with large animals and animals in remote locations. The WCS’s re
Arts/science video installation to open in London (January) and Scotland (February).
Two 19th century scientists, each involved with a mountain top observatory, and who each in their own way contributed to the development of ‘big science’ research in the 20th-21st centuries, are to be celebrated by an arts initiative to which University of Leicester space scientists have made an important contribution.
The “Little Earth” project relates to the points of contact between Kristian
The recent tragedy striking the coastlines of the Indian Ocean has highlighted the benefits of international cooperation in Earth Observation for the management of disaster relief, while demonstrating the scope for improved cooperation in the future.
International Charter on Space and Major Disasters
Immediately after the first tsunami struck in the Eastern Indian Ocean the International Charter on Space and Major Disasters was invoked by three different agencies. I
The percentage of Earths land area stricken by serious drought more than doubled from the 1970s to the early 2000s, according to a new analysis by scientists at the National Center for Atmospheric Research (NCAR). Widespread drying occurred over much of Europe and Asia, Canada, western and southern Africa, and eastern Australia. Rising global temperatures appear to be a major factor, says NCARs Aiguo Dai, lead author of the study.
Dai will present the new findings on
A new discovery by a team of Queen’s University scientists suggests that ancient earth was much colder than previously thought – a discovery that has broad implications for those studying the earth’s climate.
Queen’s researchers have discovered the mineral ikaite in 700-million-year-old marine sedimentary rocks in the Mackenzie Mountains of the Northwest Territories and eastern Yukon. This discovery proves that the ancient ocean was much colder than previously believed, says Noel Ja
Scientists using NASA satellite data found the shape of the Earth appears to be influenced by big climate events that cause changes in the mass of water stored in oceans, continents and atmosphere.
The study’s principal researchers are Minkang Cheng and Byron D. Tapley, of the Center for Space Research, University of Texas at Austin. They reviewed climate events like El Niño Southern Oscillation (ENSO) and Pacific Decadal Oscillation (PDO) that affect the amount of water moving in
The combined Geophysical Fluid Dynamics Laboratory/University of Rhode Island coupled hurricane-ocean model has helped to improve intensity predictions during tropical storms. However, scientists have found that the model consistently under-predicts maximum wind speed in very strong hurricanes.
In the current issue of the Journal of the Atmospheric Sciences, University of Rhode Island physical oceanographer Dr. Isaac Ginis describes how he and a team of scientists are refining the
Satellites provide a birds eye view of planet Earth, and the space-based vantage can be extremely useful to people interested in viewing out-of-the-way places. Conservationists, for example, must monitor far-flung areas in need of protection. Wars, poverty, remoteness, lack of government involvement, and uncertainty over the best places and ways to focus limited resources can all hinder conservation efforts. Now, NASA satellite imagery is giving scientists and conservationists some of the
The depth in the ocean where calcium carbonate dissolves at a faster rate than it is deposited is called the calcite compensation depth (CCD). At present this depth is approximately 4,500 meters (14,700 feet) with some variation between and within ocean basins. Because the CCD is linked to ocean acidity, which is, in turn, linked to atmospheric carbon dioxide concentrations and, hence, to global climate, it is important for scientists to understand the impact of possible changes in its depth.
Sierra Nevada waters usually free of troublesome bacteria except in high use areas
Data collected by experts from the UC Davis School of Medicine have revealed that except for some heavily used areas, streams and lakes in the high country of the Sierra Nevada are generally clean and fresh.
The good news for campers can be found in a pair of studies published in the latest issue of the quarterly medical journal Wilderness and Environmental Medicine. UC Davis physician R
Erupting volcanoes are among the most destructive forces in Mother Natures arsenal. But where many people live on or near the flanks of such mountains, the real disaster often doesnt start until the eruption has subsided and the world has stopped paying attention. It is then that rain-swollen rivers emanating from volcanic peaks can send massive lahars – large waves of mud made up of water, ash and volcanic rock – careening down the mountainsides, often burying everything in their
The position of the earths tectonic plates is key, says Lehigh University seismologist
The location of the recent earthquake that triggered a deadly tsunami in the Indian Ocean came as no surprise to geologists, says Anne Meltzer, a world-renowned seismologist at Lehigh University. “Earthquakes like this one happen only once every 50 to 100 years and they happen in very specific locations,” says Meltzer, who has supervised two major international seismology research project
Shoppers throughout Europe are enjoying a greater variety of organic potatoes at more affordable prices, according to researchers who publish an international study today.
Several varieties of organic potato, suitable for a range of national palates and cuisine, are adorning supermarket shelves across the continent for the first time.
A European study, led by Nafferton Ecological Farming Group at the University of Newcastle upon Tyne, found up to ten varieties of potatoes, w
Philip Liu, Cornell University professor of civil and environmental engineering, will lead a delegation of American scientists from the National Science Foundations Tsunami Research Group and the U.S. Geological Survey (USGS) into the tsunami-ravaged areas of Sri Lanka, Jan. 9-16.
The scientists will examine inundation areas, estimate wave heights, determine the precise arrival time of the tsunami, scour the area for geological evidence and sediment deposits and examine
A newly-invented automatic waste transportation and sorting system operates economically and ecologically on virtually any kind of premises.
Pre-separated waste is transported in biodegradable bags through a sealed pipeline. Each type of material is delivered to an appropriate container for recycling, disposal or use as an energy source.
“The main innovation of the XMIT system is that different waste fractions can be transported in the same pipe, making separation eas
A week after the tsunami that hit Asia on 26 December the death toll is still rising. Nearly 140 000 people are confirmed dead, more than 1.8 million people need food aid and an estimated five million are homeless.
The tsunami formed when an earthquake of 9.0 magnitude vertically jolted the seabed by several metres, displacing hundreds of cubic kilometres of water. The epicentre was 320 km west of Medan, just off the west coast of the Indonesia island of Sumatra. The people of Ind