Researchers from the University of Amsterdam have demonstrated that the climate in South Mexico changed following the collapse of the Maya empire. (Netherlands Organization for Scientific Research release)
New research shows that the assumptions behind a theory that sun-blocking, life-ending dust from an asteroid collision with Earth 65 million years ago are amiss, and therefore damage estimates from future asteroid impacts are also amiss. (Geological Society of America release)
Human activity has affected Earth's surface temperature during the last 130 years, according to a study published this month by the Journal of Geophysical Research. (American Geophysical Union release)
When rain brought an end to an intense drought in the Everglades a decade ago, wildlife biologist Peter Frederick thought there would be few wading birds left. Instead, he was shocked to note a surge in breeding pairs of white ibis, wood storks, snowy egrets and tricolor herons. (University of Florida release)
Researchers studied the relationships between rainfall and discharge of the Congo River and its main tributaries over the 20th century. (Institut de Recherche pour le Développement release)
The widely accepted theory that changes in Earth's orbit drive cycles of glaciation can't account for an early thawing of glaciers from the next-to-last ice age. (University of Minnesota release)
An exploding star may have destroyed part of Earth's protective ozone layer 2 million years ago, devastating some forms of ancient marine life. (Johns Hopkins University release)
The Earth may have had an oxygen-rich atmosphere as long ago as three billion years and possibly even earlier, three leading geologists have claimed. (Australia's Commonwealth Scientific and Industrial Research Organisation release)
Scientist develops a way to help weather forecasters and the public understand the likely impacts of winter storms. (University of Maine release)
The relationship between extreme temperature and mortality in the United States varies by location, according to a study from researchers at the Johns Hopkins Bloomberg School of Public Health. (Johns Hopkins University Bloomberg School of Public Health release)