The Trump administration has instructed U.S. diplomatic posts to increase visa vetting for those associated with Harvard, including social media reviews, as a measure to combat anti-Semitism.

All visa applicants to Harvard University will be more intensely vetted, following a directive that singles out the institution for scrutiny.

Exposure to wildfire smoke may increase lung cancer patients' risk of dying from their disease, particularly among non-smokers, but the effect may be mitigated by certain cancer treatments, according to a large California study presented at a major medical meeting on Saturday.