A researcher uncovers why most of the geological records left by ancient rivers preserve processes more commonplace than extraordinary.

Physicists’ innovative model provides insight into the behavior of the black hole at the center of our galaxy.

Doug Kennett’s work reveals that maize became a key food source in Central America 4,700 years ago.

One really important piece of that is structuring farms to persist without external inputs like fossil fuels or toxic chemicals,” said Liz Carlisle, an assistant professor in Environmental Studies at the University of California, Santa Barbara. Those can create problems that degrade both the food system and the surrounding environment, she said.