/r/askscience
My newborn son often cries inconsolably and without warning. How did early humans deal with this seeming invitation to danger?
Mark as read: Add to a list
Do men carry specific genes for female traits, such as breast size? Do women carry specific genes for male traits, such as penis size?
Mark as read: Add to a list
Mark as read: Add to a list
Mark as read: Add to a list
Mark as read: Add to a list
Mark as read: Add to a list
Mark as read: Add to a list
Mark as read: Add to a list
Mark as read: Add to a list