While most twins are fraternal or identical, science reveals a captivating array of rarer subtypes. With proper prenatal care, many risks associated with twin pregnancies can be managed effectively.

Identical vs. fraternal The most common types of twins are identical and fraternal. Identical twins are conceived from one fertilized egg.

Five weeks ago, the Minnesota Twins had little to show for their offseason work. Despite manning the phones all winter, the front office had only the $950,000 free-agent signing of rehabbing ...