By Simon Fraser, BBC
A subset of Alzheimer's cases may be caused by two copies of a single gene, new research shows
Tunisian opposition wants political prisoners freed before taking part in presidential election
Swiatek rallies against Haddad Maia to reach Madrid Open semis
Walmart shutting down its 51 health care clinics, virtual care service
Merlier wins Giro Stage 3 after Pogacar fires up finale and stays in the lead
Nigerians struggle with fuel shortages as queues form across major cities
Walmart shutting down its 51 health care clinics, virtual care service
Two suspects arrested in fatal shooting on Delaware college campus are not students, police say
Using a walker boot for too long may mean you can't ever walk properly without it again
New Liberia forest boss plans to increase exports, denies working with war criminal Charles Taylor
Audit finds Wisconsin Capitol Police emergency response times up, calls for better tracking