Why is human pregnancy so long? Summary: An anthropologist suggests that the length of human pregnancy is limited primarily by a mother’s metabolism, not the size of the birth canal. The research challenges the long-held notion of an evolutionary trade-off between childbirth and a pelvis adapted for walking upright. Is 36 weeks full-term? a gestational […]
How does valpak make money?
How does valpak make money? By filling their Blue Envelopes with offers from a wide range of businesses, Valpak can keep costs down for everyone. Companies present their businesses to selected Neighborhood Trade Areas (NTAs) through promo codes, coupon codes, printable coupons, circulars, inserts, or envelope cover advertising. What does it cost to advertise in […]