National Business

OTTAWA — The owners of a Sarnia, Ont., plastics plant that has been emitting dangerous levels of the cancer-causing chemical benzene for years say they need more time to comply with tougher federal rules.

MONTREAL — Air Canada pilots intend to request help from a federal conciliator to assist in stalled contract negotiations with the airline, the union representing them announced Sunday.

OTTAWA — Just as the summer travel season gets into gear, Canadians and visitors could find themselves waiting in long lines at the border — delays that could also deal a blow to the economy.

CALGARY — Plant biologist Marcus Samuel has been working for more than a decade to improve the climate resilience of crops.

BEIJING (AP) — A Chinese spacecraft landed on the far side of the moon Sunday to collect soil and rock samples that could provide insights into differences between the less-explored region and the better-known near side.

HINTON, Alta. — The Transportation Safety Board is sending a team to investigate an early morning train derailment in northwestern Alberta. TSB spokesman Liam MacDonald says a westbound CN freight train left the tracks at around 5:30 a.m.

A worker strike has forced Vancouver-based Taseko Mines Limited to suspend operations at its Gibraltar copper mine in central British Columbia, about 200 kilometres south of Prince George.

OTTAWA — It was supposed to do the heavy lifting for Canada's greenhouse gas emissions targets.

CAPE CANAVERAL, Fla. (AP) — A last-minute problem nixed Saturday’s launch attempt for Boeing’s first astronaut flight , the latest in a string of delays over the years.

OTTAWA — Several senior officials convened quietly in the Privy Council committee room on a Wednesday afternoon in August 1961 to discuss a troublesome issue.