For the first time, scientists have identified cells in mice that are capable of regenerating new hair follicles when transplanted into the skin. The finding is likely to spur research into new hair loss treatments for humans.
The mystery of migrating monarch butterflies has captured the attention. of people throughout the world. East of the continental divide in North. America, monarchs generally migrate to central Mexico from as far away as. Ontario, Canada. Monarchs west of the divide fly to the coast of California. to spend the winter. They cluster together on tree limbs during the winter. months in California by the thousands, and in Central Mexico by the mil-. lions.
Viceroy Butterfly Life Cycle. The monarch (Danaus plexippus) is a brushfooted butterfly of the Danainae subfamily. It is perhaps the most well-known of all North American butterflies. Since the 19th century, it is also found in New Zealand, and has been known in Australia since 1871. [1] [2] In Australia it is also known as the wanderer butterfly. [3] In Europe it is resident in the Canary Islands and Madeira, and is found as a migrant in Russia, Azores, Sweden and Spain. Its wings feature an easily recognizable orange and black pattern, with a wingspan of 8.5â12.5 cm (3.34 inâ4.92in). (The viceroy butterfly has a similar size, color, and pattern, but can be distinguished by an extra black stripe across the hindwing.)