An immunotherapy cocktail from Roche helped slow an aggressive type of breast cancer where new treatments have proven elusive, offering positive news for the Swiss drugmaker as it chases medicines produced by its rivals.

An experimental cancer drug that Novartis hopes will raise the profile of its oncology portfolio cut the risk of death or disease progression by more than a third in breast cancer patients with a hard-to-target gene mutation.

A European-Japanese spacecraft set off on a treacherous seven-year journey to Mercury to probe the solar system's smallest and least-explored planet.

For the first time, humans will visit the deepest part of each of the five oceans, plunging to the sea floor using a two-person craft designed to withstand the intense pressures more than 5.5 miles (9 km) below the surface.

The skull of Luzia, the oldest known human fossil in the Americas, was found by researchers combing through debris at Brazil's National Museum, which burned down in September, the Museum said on Friday.

Crunchy and tasty, yes, but could carrots also strengthen cement and cut carbon dioxide emissions for the building industry?

You can call it a prehistoric prequel.

Astronomers peering billions of light years into space have detected the largest, most extensive collection of galaxies ever registered in the early days of the universe, a "proto-supercluster" they nicknamed Hyperion after a titan from Greek mythology.

U.S. regulators have cleared the way for farmers to grow a cotton plant genetically modified to make the cottonseed edible for people, a protein-packed potential new food source that could be especially useful in cotton-growing countries beset with malnutrition.

A respected science journal is to withdraw a much-cited review of evidence on an illness known as chronic fatigue syndrome (CFS) amid fierce criticism and pressure from activists and patients.