LifeNew species are more likely to evolve in areas where few already exist It has long been thought that new species are most likely to evolve in biodiversity hotspots like the Amazon rainforest, but a genetic analysis of birds suggests that extreme environments where few species exist help drive evolution News
LifeSome animals may use their penis bone to scoop out a rival's sperm A study of 82 bacula, the bones found in the penis of most male mammals, suggests that they may be used to displace sperm from another male already in a female’s reproductive tract News