WASHINGTON — Archaeology is a vital tool in understanding the long-term consequences of human impact on the environment. Computational modeling can refine that understanding. But according to Arizona State University archaeologist C. Michael Barto…
WASHINGTON — Scientists have taken a major step toward accurately determining the amount of energy that the sun provides to Earth, and how variations in that energy may contribute to climate change.
In a new study of laboratory and satellite …
PROVIDENCE, R.I. [Brown University] — The world’s oceans are under siege. Conservation biologists regularly note the precipitous decline of key species, such as cod, bluefin tuna, swordfish and sharks. Lose enough of these top-line predators …
Scientists studying a column of Antarctic ice spanning 650 years have found evidence for fluctuations in biomass burning–the consumption of wood, peat and other materials in wildfires, cooking fires and communal fires–in the Southern Hemisph…
Evolutionary divergence of humans from chimpanzees likely occurred some 8 million years ago rather than the 5 million year estimate widely accepted by scientists, a new statistical model suggests.
The revised estimate of when the human species pa…
The landscape of Central Africa 65 million years ago was a low-elevation tropical belt, but the jury is still out on whether the region’s mammals browsed and hunted beneath the canopy of a lush rainforest.
The scientific evidence for a tropical …
The Arctic sea ice cover appears to have reached its minimum extent for the year, the third-lowest recorded since satellites began measuring sea ice extent in 1979, according to the University of Colorado at Boulder’s National Snow and Ice Data C…
While vultures across Asia teeter on the brink of extinction, the vultures of Cambodia are increasing in number, providing a beacon of hope for these threatened scavengers, according to the Wildlife Conservation Society (WCS) and other members o…