Because of poor dates for land fossils laid down before and after the mass extinction at the end of the Permian, paleontologists assumed that the terrestrial extinctions from Gondwana occurred at the same time as the better-documented marine extinctions. But a new study provides more precise dates for South African fossils and points to a long, perhaps 400,000-year period of extinction on land before the rapid marine extinction 252 million years ago.
The coronavirus outbreak raised everyone's awareness of the significance of global supply chains to modern economies. But global supply chains also play an important role in greenhouse gas emissions. How they are managed can either increase or decrease carbon emissions, new research shows.
A new HKU research highlighted the importance of reducing fossil fuel combustion not only to curb the trend of global warming, but also to improve the quality of China's coastal waters. The findings were recently published in the prestigious journal Environmental Science & Technology.
Rice University and Georgia Tech scientists use data from ancient coral to build a record of temperatures in the tropical Pacific Ocean over the last millennium. The data question previous links between volcanic eruptions and El Niño events.
Global warming has caused the total area of more than 600 Greater Caucasus glaciers to drop by approximately 16%, according to an international research team that includes Stanislav Kutuzov, geographer from HSE University. Glaciers without rock debris coverage have decreased more than those with debris coverage. https://www.the-cryosphere.net/14/585/2020/
Results from pre- and post-hike surveys of a burned landscape indicate that people understand and appreciate the role of fire in natural landscapes more than is perceived.
As cities physically expanded worldwide between 1970 and 2010, the population in those cities became less dense, according to a study led by a Texas A&M university professor.
Shorter and warmer winters lead to an increase in emissions of methane from northern lakes, according to a new study by scientists in Finland and the US. Longer ice-free periods contribute to increased methane emissions. In Finland, emissions of methane from lakes could go up by as much as 60%.
New research has found that local community involvement is crucial to restoring Indonesia's peatlands -- unspoilt peatlands act as a carbon sink and play an important role in reducing global carbon emissions. They are also a crucial habitat for birds and animals, including endangered species such as orang-utans and tigers.
If circulation of deep waters in the Atlantic stops or slows due to climate change, it could cause cooling in northern North America and Europe - a scenario that has occurred during past cold glacial periods. Now, a Rutgers coauthored study suggests that short-term disruptions of deep ocean circulation occurred during warm interglacial periods in the last 450,000 years, and may happen again.