Technology

Newly discovered fossil documents small-scale evolutionary changes in an extinct human species

Males of the extinct human species Paranthropus robustus were thought to be substantially larger than females — much like the size differences seen in modern-day primates such as gorillas, orangutans and baboons. But a new fossil discovery in South Africa instead suggests that P. robustus evolved rapidly during a turbulent period of local climate change about 2 million years […]

Technology

Newly discovered fossil documents small-scale evolutionary changes in an extinct human species

Males of the extinct human species Paranthropus robustus were thought to be substantially larger than females — much like the size differences seen in modern-day primates such as gorillas, orangutans and baboons. But a new fossil discovery in South Africa instead suggests that P. robustus evolved rapidly during a turbulent period of local climate change about 2 million years […]

Technology

Depression worsens over time for older caregivers of newly diagnosed dementia patients

Caring for a partner or spouse with a new diagnosis of Alzheimer’s or related dementia is associated with a 30% increase in depressive symptoms, compared to older adults who don’t have a spouse with dementia—and these symptoms are sustained over time, a new University of Michigan study found. This sustained depression over time is important […]

Technology

Newly discovered ‘support system’ for axons suggests a novel therapeutic target for neurodegenerative diseases

Axons are long, finger-like projections of neurons that transmit critical signals throughout the nervous system. But because they are fragile, they are often among the first casualties of certain neurodegenerative diseases, causing symptoms such as muscle weakness or numbness of limbs. New research from the University at Buffalo reveals that despite the fragility of axons, […]