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Canadians can fly to the U.S. but cannot enter by land. Most non-Canadians can't enter Canada by land or air. The government says a full reopening may require 75% of Canadians to be fully vaccinated.

Widespread protests across Cuba have revealed political challenges President Biden faces as he seeks to support the demonstrations without hurting their cause — or his own political interest.

Firefighters are working in extreme temperatures across the U.S. West and struggling to contain wildfires, the largest burning in California and Oregon, as another heat wave baked the region, straining power grids.

A magnitude 6 earthquake jolted both sides of the California-Nevada state line, tossed boulders onto a major roadway and was felt as far off as Las Vegas and even San Francisco, with days of aftershocks predicted, authorities said.

As the delta variant takes over in the U.S., new, localized outbreaks are emerging. Those surges are likely driven by pockets of dangerously low vaccination rates.

Pfizer is about to seek U.S. authorization for a third dose of its COVID-19 vaccine, saying Thursday that another shot within 12 months could dramatically boost immunity and maybe help ward off the latest worrisome coronavirus mutant.

Stream or tune in Monday, July 12, 2021 at 11 p.m. on KPBS TV

Premieres Sundays, July 11 - Aug. 15, 2021 at 9 p.m. on KPBS TV / On Demand

Lower UVB exposure was significantly correlated with higher rates of colorectal cancer across all age groups.

Clinical trials show Wegovy triples the average weight loss seen with other drugs. Whether it will reach many patients largely depends on whether insurers decide to cover it.