Scientists have warned that carbon nanotubes could pose a cancer risk similar to that of asbestos, saying the government should restrict the use of the materials to protect human health. Carbon nanotubes were developed in 1991 and have proved extremely useful, conferring great strength while being very light.
Democratic presidential candidate Barack Obama on Wednesday won the endorsement of Lee Hamilton, a former Indiana congressman who is a leading United States authority on foreign relations and national security. Hamilton said Obama offers American voters the best chance to create a new sense of national unity and transcend division.