While AIDS came to prominence in the 1980s, a new study published Friday says it was actually around decades before, in the 1920s.
In what an international team of scientists are calling a "perfect storm" for spreading the virus, they think its proliferation started in the city of Kinshasa, the cap...

President Barack Obama addressed the United Nations on climate change at the UN Climate Change Summit on September 23, 2014 in New York.

United Nations - Statement by Mr. Leonardo DiCaprio, UN Messenger of Peace with a special focus on climate change, at the opening of the Climate Summit 2014.

IPCC Fifth Assessment Report - Working Group II - Climate Change 2014: Impacts, Adaptation, and Vulnerability.

Hundreds of thousands of demonstrators from around the world united to urge policy makers to take action on climate change ahead of an upcoming meeting at the United Nation on September 23, 2014.

Some children battling epilepsy have seen a drastic turnaround and reduction of seizures after using Charlotte's Web, an oil made from marijuana plants very low in THC and high in a chemical called cannabidiol, or CBD. Lindsay Watts reports.

Neurologist and author Oliver Sacks brings our attention to Charles Bonnett syndrome -- when visually impaired people experience lucid hallucinations. He describes the experiences of his patients in heartwarming detail and walks us through the biology of this under-reported phenomenon.

The first European infected by a strain of Ebola that has killed more than 932 people in West Africa, Spanish priest Miguel Pajares, has arrived in his homecountry on Thursday, August 7, 2014. Pajares, 75, was working for a non-governmental organization in Liberia and was repatriated along with his ...

West Africa is being plagued by a new outbreak of Ebola — a terrifying disease that causes its victims to bleed to death from the inside out. Ebola has no cure, and the latest epidemic is spreading fast.

VICE News visited Liberia, where many feel the new outbreak began, borne from the bushmeat ma

The Temple University School of Medicine research team's approach looks promising as they work towards a permanent cure and potential for protection against HIV. "This is one important step on the path toward a permanent cure for AIDS," says Kamel Khalili, PhD, Professor and Chair of the Department ...