You've heard of chloroquine by now. Originally developed by German scientists in the 1930s, the anti-malaria drug is based on a natural compound present in the bark of certain South African trees. For nearly a century it's been saving lives globally, but remained under the radar of countries where malaria isn't a big problem. Thanks to Covid-19, chloroquine is back in the media spotlight as a potential treatment to reduce severe coronavirus symptoms. To be clear: we don't know if it works.

Now your iPhone or other Apple device can help you determine if you have symptoms associated with the coronavirus. You can simply ask Siri about symptoms of the coronavirus – "Siri, what are the symptoms of the coronavirus?" The assistant will ask you whether you certain symptoms such as fever, dry cough or trouble breathing and if you have been in contact with someone who might have contracted the virus. Even if Siri assesses that you are at lower risk, the assistant will offer some advice on hand washing and social distancing. Answers come from the U.S. Public Health Service and the Centers for Disease Control and Prevention.