Oil slips slightly on rising coronavirus cases, returning Libyan supplies

NEW YORK (Reuters) - Oil prices slipped on Tuesday as investors worried that rising COVID-19 cases would hurt demand while supply could rise with a potential resurgence of Libyan oil production, which has slowed to a trickle since the start of the year.The more-active September contract for Brent was down 5 cents at $41.80 a barrel by 1:31 p.m. EST (1731 GMT), after gaining 92 cents in the previous session. The August contract , which expires on Tuesday, fell 52 cents, or 1.2%, to $41.19. The..