MDI Biological Laboratory has been awarded a $12 million federal grant to aid in researching the aging process and the regrowth of human body parts. MDI Lab researchers will use the $12 million to study progeria — a rare disease that causes accelerated aging in children — to learn more about normal aging. They will examine heart and limb regeneration in the axolotl, a salamander with extraordinary regenerative powers, to see how regeneration might be induced in humans. The regulation of gene aging will also be studied, officials said. Read more.