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.

TORONTO, Sept 22 (Reuters) - General Motors Co's Oshawa plant will do final assembly work on at least 70,000 pickup trucks a year once investments promised in its Canadian unit's new labor agreement are complete, according to two sources close to negotiations.

(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.

NEW YORK, Sept 22 (Reuters) - World stock indexes and bond prices climbed on Thursday, extending gains from a day earlier, when the U.S. Federal Reserve signaled an increasingly cautious approach to future interest rate hikes.

BERLIN (Reuters) - Volkswagen said it will halt production of the Golf hatchback at its core Wolfsburg factory for three days starting on Friday because of technical problems at a stamping plant.

CHICAGO (Reuters) - A Chicago policeman who was indicted on federal civil rights charges after being captured on a dashboard camera firing into a car full of teenagers, wounding two of them, pleaded not guilty on Thursday, a court official said.