The continents will reunite again in the deep future. And a new study, presented today during an online poster session at the meeting of the American Geophysical Union, suggests that the future arrangement of this supercontinent could dramatically impact the habitability and climate stability of Earth. The findings also have implications for searching for life on other planets.
Rates of soil erosion and alluvium accumulation in North America accelerated 10-fold after Europeans colonized the continent, according to new research carried out by scientists from China, Belgium and USA.
A state-of-the-art georeferenced database of public healthcare facilities. In the prestigious journal PNAS, a new study published with the contribution of the RFF-CMCC European Institute on Economics and the Environment (EIEE) provides a comprehensive planning-oriented, inequality-focused analysis of different types of healthcare accessibility in sub-Saharan Africa.
University of Copenhagen researchers have been following vegetation trends across the planet's driest areas using satellite imagery from recent decades. They have identified a troubling trend: Too little vegetation is sprouting up from rainwater in developing nations, whereas things are headed in the opposite direction in wealthier ones. As a result, the future could see food shortages and growing numbers of climate refugees.
Researchers are studying a tornado's song and other 'doors to danger' in an increasingly chaotic world.
A continuous 10,000-year record of alpine glacier fluctuations in Wyoming's Teton Range suggests that some glacial ice in the western US persisted in a reduced, essentially dormant state during periods of early Holocene warming. The findings challenge the paradigm that all Rocky Mountain glaciers completely disappeared during these warm, dry conditions, instead.
Among seismologists, the geology of Alaska's earthquake- and volcano-rich coast from the Aleutian Islands to the southeast is fascinating, but not well understood. Now, with more sophisticated tools than before, a University of Massachusetts Amherst team reports unexpected new details about the area's tectonic plates and their relationships to volcanoes.
Using X-rays, Professor Hiroki Obata of Kumamoto University, Japan has imaged 28 impressions of maize weevils on pottery shards from the late Jomon period (around 3,600 years ago) excavated from the Yakushoden site in Miyazaki Prefecture. This is the first example of pottery with multiple weevil impressions discovered in Kyushu, and the density of impressions is the highest ever found in Japan.
Crossing international borders can be dangerous, if not deadly, for refugees and asylum seekers, who have been displaced by conflict or a humanitarian crisis. According to data from the International Organization for Migration, from January 2014 to December 2018, there were more than 16,300 forced migrant deaths. These deaths did not occur at random but occurred in clusters reflecting distinct patterns in space and time that can be addressed by humanitarian interventions, according to a Dartmouth-led research team.
Social mobility differs considerably from country to country. The United States was once exceptional when it came to social mobility but is not anymore compared with other countries, like Canada, Ireland and Sweden. The landscape has shifted unevenly over the last century with some areas of the U.S. scoring high in social mobility and others scoring low, some persistently so.