Advertisement

15 January 2019

New research shows significant decline of glaciers in Western North America

The first comprehensive assessment of glacier mass loss for all regions in western North America (excluding Alaskan glaciers) suggests that ice masses throughout western North America are in significant decline: glaciers have been losing mass during the first two decades of the 21st century.

Read More >>

Comments/Trackbacks (0)>>



14 January 2019

Fort McMurray homes have normal levels of indoor toxic substances following wildfire, new study reveals

Researchers have examined dust from homes in Fort McMurray in Canada for evidence of harmful toxins left in the aftermath of the devastating 2016 wildfire. Their study reveals normal levels of contaminants that are comparable to homes across Canada, and so far, no evidence of long-term health risks from fire-ash exposure in residents’ homes

Read More >>

Comments/Trackbacks (0)>>



11 January 2019

Barrier island sand dunes recover at different rates after hurricanes

Sand dunes on coastal barrier islands buffer the U.S. Atlantic and Gulf coasts from oncoming hurricanes. Every year, millions of public and private dollars fund the restoration of these barrier islands, but managers often focus on the recovery of smaller sand dunes and aim at making them bigger, for better storm protection. But new research presented at the 2018 AGU Fall Meeting last month finds sand dunes on these barrier islands don’t all recover at the same rate. Small dunes go back to becoming small dunes; large dunes recover to be large dunes; and they don’t typically grow larger than they were before the storm struck.

Read More >>

Comments/Trackbacks (0)>>



9 January 2019

Scientists breathalyze cows to measure methane emissions

USDA researchers use some unconventional methods to analyze methane emitted by Oklahoma cows. Credit: Richard Todd.

Cattle burps are the number two source of methane in the U.S., but it’s tricky to measure exactly how much methane one cow produces in a day. That’s why researchers at the USDA-ARS Conservation and Production Research Laboratory in Bushland, Texas set out to use a number of different methane assessment methods — including a “breathalyzer for cows” — to determine the methane emissions of free-range cattle on Oklahoma grasslands.

Read More >>

Comments/Trackbacks (0)>>



7 January 2019

Colorado’s Lake Dillon is warming rapidly

The surface waters of Lake Dillon, a mountain reservoir that supplies water to the the Denver area, have warmed by nearly 5 degrees Fahrenheit (2.5 degrees Celsius) in the last 35 years, which is twice the average warming rate for global lakes. Yet surprisingly, Dillon does not show adverse environmental changes, such as nuisance algal blooms, often associated with warming of lakes.

Read More >>

Comments/Trackbacks (0)>>



3 January 2019

Climate warming experiment finds unexpected results

The dried leaf samples were put in mesh bags and numbered before being returned to the warming plots. Credit: Stephanie Roe.

Climate models predict plant decomposition in the tropics will increase in a warmer world, but a new study shows the opposite

Read More >>

Comments/Trackbacks (0)>>



2 January 2019

Dangerous sneaker waves puzzle scientists

On January 16, 2016, a sudden swath of large and powerful waves swept through seaside communities along 450 kilometers (280 miles) of Pacific Northwest coastline. From Washington to northern California, water rushed past normal tide lines and filled beaches and streets, stretching hundreds of meters inland. These “sneaker waves” are aptly named given their unannounced arrival, which occurs when massive waves push extra water onshore—a higher-than-usual water level that scientists refer to as runup. At best, these events take beachgoers by surprise. At worst, they are disastrous and fatal.

Read More >>

Comments/Trackbacks (1)>>



28 December 2018

Who is vulnerable to the impacts of tropical cyclones and why?

A radar image of the Bhola cyclone, believed to be the deadliest tropical cyclone in world history, struck Bangladesh on 12 November, 1970, resulting in upwards of 300,000 deaths. Credit: NOAA.

Tropical cyclones, and the torrential rains and strong winds these storms bring along with them, threaten coastal communities around the world and are expected to increase in intensity due to climate change. Whether or not a natural hazard, such as a tropical cyclone, becomes a natural disaster depends on whether the hazard overwhelms existing human infrastructure in a particular country or region. But when does a natural disaster result in fatalities?

Read More >>

Comments/Trackbacks (1)>>



27 December 2018

Rings make Saturn shadier, bluer and less hazy in winter

Saturn’s rings shade the winter hemisphere, keeping sunlight from making the hazes that give most of the planet its golden color. The clearer atmosphere is blue thanks to the same light scattering phenomenon at work in Earth’s skies. Credit: NASA/JPL/Space Science Institute

Saturn’s rings act like Venetian blinds that block sunlight for the hemisphere that’s tilted farther away from the Sun, limiting winter sunlight. This cuts down on the planet’s haze and golden glow.

Read More >>

Comments/Trackbacks (0)>>



26 December 2018

Consumer purchasing data shows locals’ response to water contamination

Supermarket purchases show scientists how communities respond to health-related water quality violations, which could provide them with a new tool for monitoring public health concerns, according to new research. In a new study, researchers saw increased purchases of bottled water and over-the-counter antidiarrheal medicine in areas where health-related violations of the Safe Water Drinking Act were reported.

Read More >>

Comments/Trackbacks (0)>>