All around the deserts of Utah, Nevada, southern Oregon, and eastern California, ancient shorelines line the hillsides above dry valley floors, like bathtub rings — remnants of the lakes once found throughout the region. Even as the ice sheets retreated at the end of the last ice age, 12,000 years ago, the region remained much wetter than it is today. The earliest settlers of the region are likely to have encountered a verdant landscape of springs and wetlands.
So just when and why did today’s desert West dry out?
Scientists are warning that ocean acidification is impacting microorganisms in our ocean known as phytoplankton and, as they pay a key role in ocean habitats, any future loss or change in species numbers could impact marine life in a big way.
Ocean acidification isn’t always mentioned in conjunction with phytoplankton blooms, and the U.S. Government has been slow to link the two, but MIT researchers say acidification of our oceans could impact phytoplankton in a big way, and that will be bad news for our marine life.
Indoor air quality isn’t something most people think about, but breathing clean air can and does impact out health. Here’s why paying attention to the air you breathe indoors is so important and how to then go about improving it. Vacuum More OftenVacuuming more often will help keep dust at bay, but many vacuums also come with a filter system which can remove mold, pollen, and other air pollutants. Aim to vacuum at least once a week, twice if you live with animals.
Lake Tahoe's iconic blueness is more strongly related to the lake's algal concentration than to its clarity, according to research in "Tahoe: State of the Lake Report 2015," released today by the Tahoe Environmental Research Center (TERC) of the University of California, Davis. The lower the algal concentration, the bluer the lake.
Data from a research buoy in the lake, owned and operated by NASA's Jet Propulsion Laboratory, Pasadena, California, enabled Shohei Watanabe, a postdoctoral researcher at TERC, to create a Blueness Index that quantified Lake Tahoe's color for the first time.
The assumption that lake clarity is tied to blueness has driven advocacy and management efforts in the Lake Tahoe Basin for decades. But Watanabe's research showed that at times of the year when the lake's clarity increases, its blueness decreases, and vice versa.
Mangrove forests could play a crucial role in protecting coastal areas from sea level rise caused by climate change, according to new research involving the University of Southampton.
The first worldwide study of animals and the seeds they eat has overturned a long-held assumption - that large animals mainly eat large seeds. The finding by UNSW Australia scientists has implications for conservation showing that a wider variety of plants than is often thought could be at risk if large animals go extinct and do not disperse their seeds.
The automotive industry needs to face up to the hazard to health posed by its diesel engines. That stark reality was brought home again to Europeans and, in particular, Londoners last week when Transport for London and the Greater London Authority revealed that an additional 5,900 early deaths annually in the EU’s largest city are attributable to long-term exposure to nitrogen dioxide (NO2), a toxic gas emitted in urban areas largely from diesel engines.
Concern about the health effects of NO2 is growing fast. The gas was known to irritate lungs and cause respiratory infections and asthma, including acute respiratory illnesses in children. It has also been linked to birth abnormalities. But this new research by King’s College London estimates for the first time the number of premature deaths caused. The study also shows an additional 3,500 deaths are caused by PM2.5, bringing the total number of people who die early because of air pollution annually in London to 9,400.
The negative health effects of international air travel are well documented but now it seems that the common elderberry can provide some relief.
In the last seven years, an estimated one person every second has been forced to flee their home by a natural disaster, with 19.3 million people forced to flee their homes in 2014 alone, according to a new report. The research suggests disaster displacement is on the rise, and as policy leaders worldwide advance towards the adoption of a post-2015 global agenda, the time has never been better to address it.
Greenland's glaciers flowing into the ocean are grounded deeper below sea level than previously measured, allowing intruding ocean water to badly undercut the glacier faces. That process will raise sea levels around the world much faster than currently estimated, according to a team of researchers led by Eric Rignot of the University of California, Irvine (UCI), and NASA's Jet Propulsion Laboratory, Pasadena, California.
The researchers battled rough waters and an onslaught of icebergs for three summers to map the remote channels below Greenland's marine-terminating glaciers for the first time. Their results have been accepted for publication in the journal Geophysical Research Letters and are now available online.
Page 2238 of 2342
ENN Daily Newsletter
ENN Weekly Newsletter