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.
Adult monarchs feed on nectar from a wide range of flowers, including milkweeds. Typical Lifespan: Most monarch butterflies do not live more than a few weeks. There are about 3 to 5 generations born each spring and summer and most of the offspring do not live beyond 5 weeks. The lone exception is the last generation born at the end of the summer.