6 October 2015
By Larry O’Hanlon Something strange has happened to the atmospheric concentration of a newly discovered, human-made, ozone-destroying gas: it has suddenly dropped and nobody knows why. The gas, HCFC-133a, is a type of hydrochlorofluorocarbon, ozone-destroying compounds used in some industrial processes, including the manufacturing of refrigerants. The use of HCFCs, which are also powerful greenhouse gases, is restricted under the Montreal Protocol. A study last year first identified HCFC-133a as …
30 September 2015
Ocean robots installed off the coast of Massachusetts have helped scientists understand a previously unknown process by which warm Gulf Stream water and colder waters of the continental shelf exchange. The process occurs when offshore waters, originating in the tropics, intrude onto the Mid-Atlantic Bight shelf and meet the waters originating in regions near the Arctic. This process can greatly affect shelf circulation, biogeochemistry and fisheries.
18 September 2015
Researchers think they have found a veritable bucket brigade that has been slowly but surely drenching the north pole of Saturn’s moon Titan – the only world in the solar system, other than Earth, to have lakes, seas and rainy weather.
14 September 2015
Studying El Niño and La Niña’s effects in regions, sub-seasons, may improve rainfall forecasts.
10 September 2015
Large asteroids that crash into the moon cause fractures to the lunar crust that extend up to 25 kilometers (16 miles) below the moon’s surface, finds a new study. These cracks could contain a record of asteroid impacts that bombarded the inner planets billions of years ago, possibly shedding new light on the formation of our solar system and the origin of life on Earth, according to researchers.
9 September 2015
The first measurements of Mercury’s movements from a spacecraft orbiting the planet reveal new insights about the makeup of the solar system’s innermost world and its interactions with other planetary bodies.
3 September 2015
New research could prompt a shift in thinking about New Zealand’s Alpine Fault.
1 September 2015
High water tables can be a bane to crop yields, compelling many farmers to drain their fields so their crops don’t drown when it rains.
But a high water table may not always be a bad thing. A new study shows it is actually a boon for some fields and during certain times of the growing season, casting light on opportunities for improving yield efficiency to meet global food demands.
27 August 2015
Researchers at Rice University, the University of Toronto, and Princeton University generated 3-D maps of the Earth under the Hangai Dome in central Mongolia from seismic data. The 3-D image below shows the earth under the dome. Colored yellow, warm rock rises up from the deep mantle toward the Earth’s surface. The pressure on the rock drops as it rises. When the rock reaches 150 kilometers (93 miles) below the surface, it starts to melt and form magma, illustrated in red. Heat released by the magma modifies the rigid outer layer of the Earth that becomes lighter and rises up, creating the Hangai Dome.
26 August 2015
Scientists studied terraced craters on Mars and found an underground chunk of ice the size of California and Texas combined.