Earliest mammal pinpointed suggests the ancestry expanded after dinosaurs died off

For the past twenty years there’s been a debate whether the mammal explosion that eventually made the class of animals dominant on Earth happened before or after the end of the dinosaur reign. Scientific papers and various evidence supporting both views have surfaced along the years, but a recent massive study conducted by a collaborative team of scientists may have

Finger Length Ratios Indicate Sexual Orientation

In a meta-analysis study researchers from the University of Ontario, Penn State, and the Centre for Addiction and Mental Health found that the second to fourth finger length ratio (2d:4d) serves as an indicator of sexual orientation.