(Reuters) - A severely disabled Wisconsin girl who made headlines with her controversial decision to end the medical assistance and treatment that was keeping her alive died on Thursday at the age of 14, the county medical examiner said.

FRANKFURT/BERLIN (Reuters) - After 12 years chasing a comet across more 6 billion km of space, European scientists will end the historic Rosetta mission by crash landing the spacecraft on the surface of the dusty, icy body at the end of the month.

NEW YORK, Sept 22 (Reuters) - The United States and Russia failed to agree on how to revive a ceasefire in Syria on Thursday as U.S. Secretary of State John Kerry said Washington cannot be the only one trying to hold open the door to peace and urged Russia and the Syrian government to do their part.

WINNIPEG, Manitoba (Reuters) - Aboriginal tribes from Canada and the northern United States signed a treaty on Thursday to jointly fight proposals to build more pipelines to carry crude from Alberta's oil sands, saying further development would damage the environment.

(Reuters Health) - Variations in a gene involved in so-called circadian rhythms that control everything from cell division to sleep may also promote the spread of breast cancer to other organs, a new study suggests.

(Reuters) - A hurricane hunter aircraft has found that Karl has strengthened in force from a depression to a tropical storm again, the U.S. National Hurricane Center said on Thursday.

WASHINGTON (Reuters) - Thirty-five U.S. states and the District of Columbia filed a lawsuit on Thursday against opioid drug maker Indivior alleging it tried to keep generic versions of a drug off the market.

WASHINGTON (Reuters) - The top Democrats on the U.S. Senate and House of Representatives intelligence committees accused Russia on Thursday of trying to influence the Nov. 8 U.S. election via computer hacking, and called on President Vladimir Putin to order a halt.

WASHINGTON (Reuters) - In a warm, lush region of West Texas crisscrossed with rivers, a bizarre reptile roamed the Triassic Period landscape about 228 million years ago, boasting a bony domed head unlike almost any creature that ever appeared on Earth.