Ancient Australian fossils indicate that the earliest eukaryotes depended on oxygen, providing new evidence that oxygen helped enable the evolution of complex life. Stored in an open-air warehouse in tropical Darwin, Australia, are dozens of trays containing cylindrical cores of rock. They are from drill holes bored hundreds of meters below the surface by mineral [...]

New research shows that wildlife reacts differently to human presence than to human-made landscapes. For centuries, people have transformed landscapes, forcing wildlife to adjust to a rapidly changing world. New research suggests that animals are not only responding to altered habitats, but also to the direct presence of humans. Researchers from UC Santa Barbara, the [...]