Why Joe Biden pardoned his son

After a surge in support Zack Polanski is hoping he can win over Kier Starmer’s constituency to become an MP. But has a controversial motion over Zionism thrown his campaign into disarray?. Help support our independent journalism at theguardian.com/infocus

Quarantine measures have been in place in several hospitals in eastern Russia since a 28-year-old laboratory worker, Darya Shipilova, died after falling ill at work following a reported accident at a plague research centre in Siberia. Russia’s health watchdog has said she died of ‘pneumonia of unknown aetiology’, but there is speculation about a possible plague infection. Lucy Hough speaks to Science Weekly co-host Madeleine Finlay – watch on YouTube. Help support our independent journalism at theguardian.com/infocus

Andy Burnham has pledged to fix England’s broken social care system. Heather Stewart explains why it matters so much to families like hers. Help support our independent journalism at theguardian.com/infocus

The US withdrew its bombers from RAF Fairford after an investigation into an alleged planned terrorist attack on the base. At least 10 B-1 bombers used by the US military in the Iran conflict flew out of Fairford on Sunday, suggesting US officials were taking the threat seriously. Last week, five men in three vans near the military base were arrested, followed by a sixth British-Iranian national. All were released on bail, drawing criticism from the Pentagon. Lucy Hough speaks to Dan Sabbagh, the Guardian’s defence and security editor – watch on YouTube. Help support our independent journalism at theguardian.com/infocus

Features writer Elle Hunt and indigenous activist María José Andrade Cerda on the growing phenomenon of influencers around the world trying to reach uncontacted tribes. Help support our independent journalism at theguardian.com/infocus