More than 3,000 people have died from Ebola in West Africa, according to reports.

Children in Guinea, Liberia and Sierra Leone who have lost parents to Ebola being avoided, group says.

  • 10 children in Colorado have developed limb weakness or paralysis after testing positive for a respiratory virus.

  • Discovery 27,000 light-years from Earth suggests building blocks of life ubiquitous throughout galaxy.

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People protest for greater action against climate change during the People's Climate March on September 21, 2014 in New York City.

Thousands march in New York City ahead of the United Nations' climate change meeting this week.

Indian 'Agariya' (saltpan) worker Manjuben Ishwarbhai rakes a saltpan in Kharaghoda some 120kms. from Ahmedabad on December 19, 2008.

The CDC has warned that 9 out of 10 U.S. children are consuming high levels of sodium.

An employee of the American Media building carries literature and antibiotics after being tested for anthrax at the Palm Beach Health Department Annex in Delray Beach, Florida, 08 October, 2001.

Researchers have warned about the overuse of antibiotics, anticipating that they will no longer work.

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Questions around dark energy and dark matter remain, although they now boil down to figuring how why they exist in the amount they do.