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.
Twelve Native Milkweeds for Monarchs. The monarch butterfly population in North America has plummeted by over 90% in just the last 20 years. Destruction of Americaâs grasslands ecosystems, commercial agricultural practices and even conventional gardening have all contributed to the precipitous decline of this iconic species.