Over the last few weeks, scientists announced they have completed mapping Chromosome 21, the chromosome associated with Down's syndrome, epilepsy, Lou Gehrig's disease, and Alzheimer's. Researchers hope the achievement will lead to treatments in the future. Nature Magazine, features a free page, Genome Gateway, with online original research papers from Nature and Nature Genetics relating to genomics. Included here is a link to the breakthrough paper announcing the completed sequence of chromosome 21. The site also provides a news service with "up-to-the-minute coverage of research progress, policy issues, funding and ethical implications of genome sequencing."